Definition of knock in US English:



  • 1no object Strike a surface noisily to attract attention, especially when waiting to be let in through a door.

    ‘I knocked on the kitchen door’
    • ‘Motorists who somehow believe fines will go away if they are ignored will regret their action when bailiffs come knocking at the door.’
    • ‘There was no noise from inside, so she knocked loudly.’
    • ‘‘Next time knock before you come in’ I muttered, my face still beet red as I dried the plates.’
    • ‘The Slovenian driver was asleep in his cab when he was woken by a man knocking on the window.’
    • ‘A drunk guy had spilled his drink on me and I wanted to wash my shirt so I barged in without knocking.’
    • ‘Cameron knocked twice, and the unfamiliar face of Jason Phillips appeared behind a large oak door.’
    • ‘Competitors from the Asian neighborhood are already knocking at Korea's door.’
    • ‘I sort of blinked, decided I was dreaming again - I often dream there's someone ringing or knocking at the door - and drifted back to sleep.’
    • ‘He first learned that a newspaper was on to him when his former mistress interrupted a dinner with a colleague to tell him the News Of The World had been knocking at her door.’
    • ‘When they approached and knocked on the bathroom door, they heard scuffling and the toilet flushing.’
    • ‘Her thoughts were interrupted when she heard Steve softly knock at the door before he came in.’
    • ‘Tash was ready and waiting when David knocked at her door and ushered her into a waiting taxi.’
    • ‘He knocked gently on the door, drawing the attention of every person in the room.’
    • ‘Elena knocked, straightening her suit coat, smoothing her hair.’
    • ‘Amy and I waited until I got sick and tired of waiting, and knocked lightly on the window.’
    • ‘She went to Mark's apartment and knocked on the door.’
    • ‘I had just flatly refused to talk to anybody for a few days but Beverly came knocking at my door.’
    • ‘Jim hung his coat on a peg in the waiting area and walked over to the door, knocking quietly as he opened it.’
    • ‘After a moment, he knocked louder, trying to compete with the noise.’
    • ‘He knocked lightly at the door but there was no answer.’
    • ‘He knocks loudly at the door, and it swings open with a ponderous creak.’
    bang, tap, rap, thump, pound, hammer
    View synonyms
    1. 1.1 Strike or thump together or against something.
      ‘my knees were knocking and my lips quivering’
      • ‘The pots and pans that dangled from her pack made a clanging noise, as they knocked together.’
      • ‘Heart still knocking against her ribs, she strode anxiously to the front door, rising up slightly on her feet to peer through the hole.’
      • ‘When these cattle move side by side in the herd, their hollow horns knock together, producing a characteristic resonant sound.’
      • ‘My heart was knocking against my ribs so hard I could hardly breathe, much less speak.’
      • ‘Not a leaf stirred; we could only hear our hearts beat wildly, knocking against our ribs like a trapped bird.’
      • ‘When I first met Madonna I was star-struck and my knees were knocking together because I was so nervous.’
      • ‘In fact, she could almost feel her knees knocking together.’
      • ‘Her body wouldn't stop trembling, her knees knocked together.’
      • ‘Gavin reached down to it the same time she did and their heads knocked together.’
      • ‘My heart was knocking against my chest.’
      • ‘Her legs were numb and her knees knocked together as she stumbled on the uneven ground.’
      • ‘Before he could strike, however, the man collided with him from the side, their foreheads knocking together with a loud crack.’
      • ‘His teeth were rattling in head, his legs had turned to jelly and his knees were knocking together like castanets.’
      • ‘With the right body language, no one will even know your knees are knocking.’
      • ‘My knees were actually knocking when I left your studio after telling that story.’
      • ‘She tried to stand but decided her knees would knock together, so she sat back down.’
      • ‘Vibrations shot up her arm from the shock of the two steel blades knocking together.’
      • ‘Only his fast thinking kept their heads from knocking together.’
    2. 1.2 (of a motor or other engine) make a regular thumping or rattling noise because of improper ignition.
      • ‘The only time you should consider using a higher-octane gas is if your engine starts to knock or ping.’
      • ‘While driving your car, you can also listen to the engine: if you hear knocking, it's a good sign that you have trouble.’
      • ‘This premature ignition (called knocking or pinging) lowers the power output and can damage the engine.’
  • 2with object Collide with (someone or something), giving them a hard blow.

    ‘he deliberately ran into her, knocking her shoulder’
    no object ‘he knocked into an elderly man’
    • ‘The window suddenly swung open inside, the frame knocking him hard on the chin and sending him sprawling on his back.’
    • ‘As she stepped forward a couple of younger boys came pounding down the sidewalk and both knocked into her, sending her falling backwards towards the street.’
    • ‘Most of that evening was pretty much a blur, except I do remember when Adam knocked my elbow by mistake and made me spill a drink all over myself.’
    • ‘About five of the guys sneered at me while the others ‘accidentally’ knocked into my side.’
    • ‘You might accidentally knock heads with your partner.’
    collide with, bump into, bang into, knock against, hit, strike, be in collision with, run into, crash into, smash into, plough into, slam into, dash against, ram, jolt
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    1. 2.1 Force to move or fall with a deliberate or accidental blow or collision.
      ‘he'd knocked over a glass of water’
      • ‘A new youth shelter being built in Hutton recreation area has been knocked down by vandals even before it is completed.’
      • ‘I squeaked in surprise, flinging my hand sideways and knocking half a dozen books off the shelf.’
      • ‘A cyclist was knocked off his bike on Brook Hill a couple of weeks ago.’
      • ‘An elderly man is critically ill in hospital after being knocked down when a teenager ran across a road and jumped into the middle of a bus queue.’
      • ‘Two lamps had been knocked over and broken glass covered the floor.’
      • ‘I stood up quickly, knocking my chair over in the process.’
      • ‘On the east coast, television pictures showed bricks and tiles had been knocked from some buildings, but there were no indications of serious damage.’
      • ‘As she was reaching across the table, she accidentally knocked over her glass of Coke.’
      • ‘Neighbours were beaten back by flames after knocking down the front door.’
      • ‘A woman was left lying injured after being knocked down by a child riding an off-road motorbike on the pavement.’
      • ‘He was hit from behind and knocked to the ground.’
      • ‘He was knocked unconscious and robbed in a vicious attack near Trowbridge Park.’
      • ‘There are fears the 92-year-old building could be knocked down to make way for a housing scheme.’
      • ‘The storm knocked down trees and power lines in the area.’
      • ‘He gasped as the wind was knocked out of his lungs.’
      • ‘Suddenly something struck him hard, knocking him to one side.’
      • ‘She took a step forward and was nearly knocked over by a large man rushing past her.’
      • ‘The court heard Mr Smedley was knocked to the floor before his attackers kicked him twice in the stomach.’
      • ‘Just as I approached the door, a whirlwind in the form of a small child shot out of the room, colliding with me and knocking me into the wall.’
      • ‘Suddenly the boat shifted and moved, throwing her to her knees and almost knocking Wes into the water.’
    2. 2.2 Injure or damage by striking.
      ‘she knocked her knee painfully on the table’
      figurative ‘you have had a setback that has knocked your self-esteem’
      • ‘Ruth fell and knocked her head quite hard on the table.’
      • ‘He knocked my forehead hard, which gave a great deal of pain.’
      • ‘Being the only single person in your group can be isolating. You start to wonder why you haven't got a partner and this can knock your self-esteem.’
      • ‘Tom jolted out of his dream, wincing as he knocked his elbow against the bedpost.’
      • ‘I sat up quickly and promptly knocked my head on the overhang.’
      • ‘I charged at him, but the boy knocked me hard in the ribs, throwing me back.’
      • ‘I stumbled to my feet, knocking my knee against a corner of the table.’
      • ‘Do comments like that spur you on to drive harder or do they knock your confidence?’
      bump, bang, hit, strike, crack
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    3. 2.3 Make (a hole or a dent) in something by striking it forcefully.
      ‘he suggests we knock a hole through the wall into the broom closet’
      • ‘Anywhere in the area of Amalfi or Ravello, 10 minutes in a taxi will knock a £20 hole in your pocket.’
      • ‘In one case installation of the computer was delayed a day, and when the team arrived the next morning they found that a hole had been knocked through one of the walls already.’
      • ‘Columbia broke into pieces during its return trip from space in 2003 because Nasa failed to spot that a hole had been knocked in its wing during launch.’
      • ‘That's right: if your landlord complains that you're knocking holes in the walls, he or she is too strict.’
      • ‘This is particularly clever for old buildings where knocking new holes through walls can be tricky.’
      • ‘Ms Waterman says asbestos entered their flat through a hole which builders knocked in their wall.’
      • ‘Thieves knocked a hole in the shop wall before making off with equipment valued at about £11,000.’
      • ‘Sure, it's exhilarating to read a new and undiscovered book that knocks my socks off… I think… I'm not sure it's really happened.’
      • ‘One rock knocked a four feet hole in a nearby wall and Mr Ayrton said some stones had been found three quarters of a mile away.’
      • ‘Just down the walk, I found a hole knocked in a garden wall and a hundred bricks missing.’
    4. 2.4 Demolish the barriers between (rooms or buildings)
      ‘two of the downstairs rooms had been knocked into one’
      • ‘It's a bit of a Tardis - two townhouses knocked together, with a long gallery at the back where the garden used to be.’
      • ‘To the right are two further rooms which could be knocked into one.’
      • ‘It consists of the former Egyptian embassy and a one-time annexe to Russia's embassy knocked together.’
      • ‘Lord Rogers does live in London - he has two Georgian terrace houses knocked together in Chelsea.’
      • ‘She and her husband Derek live with their four children in Wapping, east London, in two former council flats knocked into one.’
      • ‘Three Georgian townhouses were knocked together in the 1970s when Edinburgh's planning regulations were looser.’
      • ‘It seemed a small house from the outside, but on entering they could see that it actually consisted of several houses knocked together around a small courtyard.’
      • ‘Georgieva gestures around her office, which consists of two rooms knocked into one.’
      • ‘The new facility, on Rectory Road, replaces the previous cramped and out-of-date building made up of four residential houses knocked together.’
      • ‘The café looks as if it had been two rooms knocked into one.’
  • 3informal with object Talk disparagingly about; criticize.

    • ‘I'm not knocking the company, but it's going to be too small for institutional investors.’
    • ‘Critics knock the X3 for its austere interior, but most BMWs tend toward the spartan.’
    • ‘He was raised to think he's the greatest by his parents, who wanted to instill a strong sense of self in him, so it's hard to knock him for his attitude.’
    • ‘So stop knocking the town you live in and be proud of what we have and what has been achieved here.’
    • ‘It is hard to knock a man with such charisma and unswerving comic timing, but anyone having had the pleasure of seeing him on stage before would have been disappointed at the lack of new material.’
    • ‘We had a fair amount of possession and worked hard, I can't knock the commitment.’
    • ‘It's hard to knock this decision in political terms, and it has a defensible legal rationale.’
    • ‘That's because whenever they do, they never offer any praise, they will just jump straight in and start knocking what I've done.’
    criticize, find fault with, run down, disparage, belittle, depreciate, deprecate, detract from, give a bad press to, cast aspersions on, scoff at, deride, jeer at, carp at, cavil at
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  • 1A sudden short sound caused by a blow, especially on a door to attract attention or gain entry.

    • ‘She was walking towards her bedroom when a knock sounded on the door.’
    • ‘I jumped as a sharp knock sounded at my door.’
    • ‘There was a loud, hard knock at the door.’
    • ‘He heard another knock and the soft sound of a doorknob being turned.’
    • ‘The sound of a knock at the door woke him from his reverie, and he walked quickly downstairs.’
    • ‘As Willow was about to speak, a loud knock sounded on the door.’
    • ‘A sharp knock sounded at the door, interrupting their conversation.’
    • ‘She was gazing into the mirror, not really paying attention to the task at hand when a knock sounded at the door.’
    • ‘About two minutes later, there was a short knock at the cabin door.’
    • ‘He opened his mouth to speak but was interrupted by a sudden knock at the door.’
    • ‘He smiled and leaned down to kiss her, frowning as a sudden knock sounded on the door.’
    • ‘Justin heard loud knocks coming from the front door.’
    • ‘He nearly jumped out of his skin when the knock sounded at the door.’
    • ‘There was another knock, this time louder, then the sound of the door opening.’
    • ‘She must have dozed off, because the sound of a knock at the door made her nearly jump a foot in the air.’
    • ‘There was no reply, just another knock, louder than the first.’
    • ‘All of a sudden there was a knock at the front door.’
    • ‘There was a sudden knock at the door, the noise seemingly unnatural and loud in the silence that I had gotten accustomed to in the past half-hour.’
    • ‘At half-past six on the dot, a knock sounded on the door.’
    • ‘It was already very late into the night and Rosalind was beginning to doze off in her chair by the window when a sudden knock at the door startled her out of sleep.’
    tap, rap, rat-tat, rat-tat-tat, knocking, bang, banging, beating, pounding, hammering, drumming, thump, thud
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    1. 1.1 A continual thumping or rattling sound made by an engine because of improper ignition.
      • ‘In the 1920s, lead was added to petrol, and this addition allowed vehicles to reach higher speeds without engine knock.’
      • ‘This is used to determine when to adjust ignition timing to control knock. - CAS’
      • ‘Lucas oil Octane Booster eliminates spark knocks, pinging, and dieseling while promoting clean fuel burn for fewer emissions and better mileage.’
      • ‘When added to gasoline in minute amounts, tetraethyl lead prevents engine knock and increases the gasoline's octane rating.’
      • ‘Petrol fuels contain a host of additives to enhance octane rating, lower engine knock and counteract water.’
      tap, rap, rat-tat, rat-tat-tat, knocking, bang, banging, beating, pounding, hammering, drumming, thump, thud
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  • 2A blow or collision.

    ‘the casing is tough enough to withstand knocks’
    • ‘Of course with football being a very physical game there were always plenty of knocks to be taken, some leading to injuries and lay-offs.’
    • ‘Jonathan Smith is expected to undergo a fitness test after sustaining a knock to his knee on Sunday.’
    • ‘The front wings are plastic and can withstand 15 km/h knocks without damage which reduces repairs.’
    • ‘Bumps and knocks to the head are quite common, particularly among children.’
    • ‘He suffered a bad knock on the head in the second half.’
    • ‘Gashes and knocks that would put a professional footballer out of action for weeks tend to be shrugged off.’
    • ‘At no stage during the match could he recall having sustained a knock to his head.’
    • ‘One swift knock to the head knocked the guy out, and we left.’
    • ‘While the shell does protect the phone's internal components from everyday knocks and bumps, it is not waterproof, merely water resistant.’
    • ‘The bumps, jarring and knocks can damage the helmet.’
    • ‘Head guards and helmets protect the skull and the brain from injuries caused by knocks to the head during sports and greatly reduce the risk of serious head injuries.’
    • ‘No matter how well you drive, with such tight racing and constant jostling for places it is inevitable that you will incur a few bumps and knocks along the way.’
    • ‘A player just took a hard knock to the head and is lying on the field.’
    • ‘This time his injury was as a result of an accidental knock to his head as he was laying on a tackle.’
    • ‘He bent over a little and rubbed his head, it was already throbbing from before so another knock didn't make him feel any better.’
    • ‘Since one wall was completely knocked down two weeks ago, two more knocks have left the other cracked and weakened.’
    • ‘The Rams' only other injury worry is over Chris Clarke, who took a knock to a leg during the game at Flixton.’
    • ‘At present, an estimated three million people in the UK suffer from the condition, which weakens the skeleton so that a simple knock can snap a bone.’
    • ‘As the blood supply for the scalp is so good, any knock received tends to bleed profusely resulting in blood everywhere and bruising as a result.’
    • ‘Chelsea could be without William Gallas, who suffered a knock against Villa.’
    bump, blow, bang, striking, beating, jolt, jar, jarring, shock
    blow, bang, stroke, hit, slap, smack, crack, buffet, punch, cuff, thump, box
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    1. 2.1 A discouraging experience; a setback.
      ‘the region's industries have taken a severe knock’
      • ‘He seems like the kind of guy who has lived life and taken a few hard knocks along the way.’
      • ‘We're big enough to take the knocks when they're due, but is it so unthinkable sometimes to recognise and celebrate success?’
      • ‘The party has taken greater knocks in its history than this minor set-back.’
      • ‘I've suffered a lot of knocks over the years, but I've survived them.’
      • ‘There are enough hard knocks and challenges in life without us deliberately providing them for each other.’
      • ‘As the weeks passed, it became ever harder to make ends meet and a £140 servicing for Vivienne's car was a severe knock.’
      • ‘After the knock suffered by the industry last year because of the Foot and Mouth crisis, tourism operators were hoping for rather better luck this year.’
      • ‘From Australia's point of view, having got so close and then losing was a big knock.’
      • ‘Steeton saw their chance of promotion from Division One take a severe knock when they were beaten 2-1 at Ardsley Celtic.’
      • ‘But this appeal has suffered two huge knocks of late.’
      • ‘Scotland has become a harsher place and our image as a tolerant and open minded nation has taken a severe knock.’
      • ‘In the past couple of years, profits at many companies have taken a severe knock.’
      • ‘In a nutshell, I hadn't suffered the same hard knocks and had little chance of knowing what was really important in life.’
      • ‘Hovingham's chances of lifting the divisional trophy took a knock when they suffered a shock defeat at Clifton Alliance.’
      setback, reversal, reverse of fortune, rebuff, rejection, defeat, failure, difficulty, misfortune, bad luck, stroke of bad luck, mishap, bad experience, blow, body blow, disaster, calamity, disappointment, grief, sorrow, trouble, hardship
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  • 3informal A critical comment.

    criticism, disparagement, stricture, fault-finding, denigration, censure, reproach, reproval, condemnation, lambasting
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  • knock someone's block off

    • informal Hit someone very hard in anger.

      • ‘I get home from school a few days later and my mother is looking like she wants to knock my block off.’
      • ‘The young man turned to look at me, and for a second there, I thought he was going to knock my block off.’
      • ‘If I were that age - I'd knock his block off if I were his ‘so-called’ teammate.’
      • ‘In fact, I scared one of them half to death when I walked through the door; she tried to knock my block off with a mop as she thought I was an intruder!’
      • ‘I'd like to see it myself, except that someone would probably recognize me and try to knock my block off.’
      • ‘He told Bellamy he would knock his block off if he ever set foot back in Newcastle.’
      • ‘The first time we met I thought he was going to knock my block off because I'd called him Bart instead of Bartholomew.’
      strike, slap, smack, cuff, punch, beat, thrash, thump, batter, belabour, drub, hook, pound, smash, slam, welt, pummel, hammer, bang, knock, swat, whip, flog, cane, sucker-punch, rain blows on, give someone a beating, give someone a drubbing, give someone a good beating, give someone a good drubbing, box someone's ears
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  • knock someone dead

    • informal Greatly impress someone.

      • ‘I am 5ft 8in, size 8, and want to wear something that will knock him dead.’
      • ‘He is so confident that his new energy drink will knock them dead in the market place that he is planning to take on the likes of Lucozade and Red Bull.’
      • ‘I nodded and smiled faintly, ‘You're going to knock him dead tonight.’’
      • ‘We've got an answering machine gag that seems to knock them dead every time.’
      • ‘She had put on dark red lipstick and was wearing a dress that was sure to knock Chris dead.’
      • ‘‘You're going to knock them dead,’ she stated firmly, ‘and you're more handsome than any of those actors.’’
      • ‘Mandy Siegfried proves herself a young comedienne who'll duly knock them dead from Mineola to Minnesota.’
      • ‘Wear the pink strapless shirt in my second drawer - you'll knock him dead.’
      • ‘Good luck for tonight: I'm sure you'll knock 'em dead!’
      • ‘This album is trying too hard to be smooth and pleasing to the masses, meaning that Wright ends up crooning uninterestingly where she should be knocking us dead.’
      make an impression on, have an impact on, influence, affect, leave a mark on, move, stir, rouse, excite, inspire, galvanize
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  • knock someone into the middle of next week

    • informal Hit someone very hard.

  • knock it off

    • informal Used to tell someone to stop doing something that one finds annoying or foolish.

      • ‘If you're doing this as an attempt to Henry make break off his engagement with his fianceé, knock it off, because it ain't gonna happen!’
      • ‘The couple who are renting the place next to mine spent the entire night fighting. They didn't knock it off until well past two in the morning.’
      • ‘Danielle, knock it off. The overprotective mother role doesn't suit you.’
  • knock someone on the head

    • Stun or kill someone by a blow to the head.

      • ‘Trying to break up a fight between his girlfriend and another girl, he was knocked on the head and then stabbed.’
      • ‘If you knocked someone on the head and stole their wallet you would be punished.’
      • ‘The next thing he knew something hard had knocked him on the head and he had awakened with a throbbing headache and an ugly bruise.’
      • ‘Before Mackenzie could react, she was knocked on the head.’
      • ‘He was about to say something to her when the others realized it and knocked him on the head and dragged him away.’
      • ‘Godfrey had predicted prior to his disappearance that he would be knocked on the head.’
  • the school of hard knocks

    • Painful or difficult experiences that are seen to be useful in teaching someone about life.

      • ‘‘The first year was difficult, no doubt about it,’ admits this graduate from the school of hard knocks.’
      • ‘Many respondents indicated that valuable learning was only possible via hands-on training in the school of hard knocks.’
      • ‘It is quite an honor for a working writer (one who has learned the craft in the school of hard knocks, rather than in a writing program) to be asked to teach a class like this.’
      • ‘Foolishly, I had decided to learn California's unique motorcycle laws and driving rules through the school of hard knocks.’
      • ‘Unfortunately his father lost his fortune shortly thereafter, and Finlay instead received instruction from the school of hard knocks as he grew up amid grinding poverty in the Glasgow slums.’
      • ‘So you again enter the catch - 22 situation, where you are either qualified but lacking in the experience department, or the wealth of experience you have gained in the school of hard knocks is wasted as you don't have the qualifications.’
      • ‘But admissions departments should make the extra effort to look for signs of character traits, like persistence, imagination, and training in the school of hard knocks, that might be hidden in the numbers.’
      • ‘I've learned the hard way at the school of hard knocks.’
      • ‘They will very soon get the shock of their lives and learn some very painful lesson in the school of hard knocks.’
      • ‘Being a person who bypassed college and enrolled directly in the school of hard knocks, I may not be the best source to ask about higher education.’
      the way of the world, the world, the way things go, the way of it, the human condition, the times we live in, the usual state of affairs, the school of hard knocks
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  • you could have knocked me (or her, him, etc.) down with a feather

    • informal Used to express great surprise.

      • ‘I felt sure it was something physical like a virus, so you could have knocked me down with a feather when he diagnosed depression.’
      • ‘But when I read it, you could have knocked me down with a feather.’

Phrasal Verbs

  • knock someone/something about (or around)

    • Injure or damage someone or something by rough treatment.

      • ‘By the time you reach your 30's, you've been knocked around a bit, but you've made some mistakes and learned a little more about yourself.’
      • ‘Turbulence was knocking around our noisy little twin-prop plane like a beach ball in a hurricane.’
      • ‘A week in Adelaide with her had knocked Mum around fairly badly on an emotional level.’
      • ‘Violent men, who I'm told quite often want sex after they've knocked their wives about, no doubt also classify as frigid the women who don't regard a black eye as acceptable foreplay.’
      • ‘Your father was knocked about by the Depression, as nearly every man was, I suppose.’
      • ‘‘They chased after me and started knocking me about,’ she said.’
      • ‘AIt wasn't any secret by the end of the relationship that he had been knocking her about though nobody thought he would ever hurt the kids.’
      • ‘People get stirred up and aggressive and go home and knock their family about.’
      • ‘It's good to see that getting knocked around last Fall helped get his priorities straight.’
      • ‘Being here made me realize what I was missing by being rough with you and knocking you around and flirting with other girls.’
      beat up, beat, batter, strike, hit, punch, thump, thrash, smack, slap, cuff, buffet, pummel, belabour
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  • knock something back

    • Consume a drink quickly and entirely.

      ‘we knocked back a few beers’
      • ‘Once again Hemingway mechanically picks up his glass, knocks it back in a single gulp, and slams it back down.’
      • ‘We clinked glasses and I knocked my drink back, feeling the burn in my throat and the warmth in my stomach.’
      • ‘The recommended way to enjoy soju or sake, the national drinks of South Korea and Japan, is by quickly knocking them back in short, small shots.’
      • ‘Some bars sell highballs for as little as 75 cents, allowing some people to knock them back like there's no tomorrow.’
      • ‘Four out of 10 men, it said, and two out of 10 women regularly knock back at least a bottle of wine in one session to land them in the binge-drinker category.’
      • ‘Pandora settled down again and enjoyed the mood: everyone was chatting or drinking, mostly vodka, knocking it back like Perrier water.’
      • ‘Vodka was limited mostly to the liquor cabinets of Eastern Europe until World War II, when Americans and the rest of Europe started knocking it back.’
      • ‘True beer aficionados know damn well there's more to enjoying a good brew than just knocking it back with detached abandon - sip, gulp, belch.’
      • ‘She poured herself a glass of wine and knocked it back and poured another, then turned to face him.’
      • ‘Drinkers across the social spectrum are knocking it back like never before and the pressure to join in has never been stronger.’
      swallow, gulp down, drink up, swill down, swill, quaff, guzzle, toss off, consume, finish
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  • knock someone down (or over)

    • (especially of a vehicle) strike or collide with someone so as to cause them to fall to the ground.

      • ‘A child who was standing by the roadside with his mother also died after he was knocked down by one of the vehicles.’
      • ‘The two boys jumped on him and knocked him down to the carpeted floor.’
      • ‘My five-year-old daughter was nearly knocked down by a man driving a van and chatting on the phone.’
      • ‘A villager managed to film the attack before he was knocked down, his camera smashed and his arm broken.’
      • ‘The pedestrian went over the bonnet of a car after she was knocked down by a driver who had taken his friend's vehicle, the court was told.’
      fell, floor, flatten, bring down, prostrate, topple, knock to the ground, throw to the ground, rugby-tackle
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  • knock something down

    • 1Demolish a building.

      • ‘Why knock these amazing buildings down when they can be refurbished using some great modern architecture?’
      • ‘If the developer purchases the land it is believed he will either use the garages for the new properties or will knock the buildings down to create garden space for more marketable homes.’
      • ‘After discovering a serious crack in one of the gable walls, they decided instead to knock the house down and rebuild it.’
      • ‘Only he failed to get planning permission and last week successfully fought a bid by the local council to knock it down.’
      • ‘The three options for Greenroyd Avenue available to the council are to leave things as they are, partly demolish the street, or knock the whole lot down.’
      • ‘Some people are buying bungalows on the seafront, knocking them down and building another property.’
      • ‘A decision was taken to knock the old building down.’
      • ‘Mr Overton's showroom and workshop, a former hairdressing salon and a garage will all be knocked down in the summer of 2006 should plans go forward.’
      • ‘Unable to pay the £2.3m in repair costs or sell the near-ruin, he succeeded in getting planning permission from Perth and Kinross Council to knock the building down.’
      • ‘They thought knocking the building down and replacing it with a new one would be a cheaper option.’
      • ‘It followed reports that the premises might not be re-opened by the new owners as a meat slaughtering facility but would be knocked down and sold as a development site.’
      • ‘Some of the former police houses have already been knocked down and work has begun on the demolition of the old custody area.’
      • ‘The current owners, Ben Alder Estate, want to knock down the dilapidated building to construct workshops.’
      • ‘He told the Institute of Chartered Accountants that it would cost far less to refurbish ‘characterful’ buildings than knock them down.’
      demolish, pull down, bring down, take down, tear down, destroy
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      1. 1.1Take machinery or furniture to pieces for transportation.
    • 2(at an auction) confirm the sale of an article to a bidder by a knock with a hammer.

      • ‘On Sunday, November 3 a large crowd turned out as auctioneer Matt Dunne set to with the gavel to knock items down to the highest bidder.’
      1. 2.1informal Reduce the price of an article.
        • ‘When the salesman found out I was military, he started knocking the price down.’
        • ‘Depreciation should have knocked the price down to just about zero.’
        • ‘We frequently see cases whereby no bidders emerge, even when the price is knocked down to the reserve.’
        • ‘Originally priced $35, it was knocked down to $30.’
        • ‘On Apr. 14, IBM shocked the market by announcing disappointing earnings, which knocked its stock down 6%.’
        • ‘Shipments of PalmSource-based devices dropped 13.3 per cent, knocking its share down from 22.5 per cent to 9.5 per cent.’
        • ‘On the day of exchange they knocked the price down by £85,000.’
        • ‘My colleague and two people at the next table bought one each so were able to knock the price down a little bit.’
        • ‘The vandalism and burglaries in the area are knocking house prices down.’
        • ‘Then he knocked the figure down by 30%. ‘I think a lot of my peers earn too much,’ he says.’
        reduce, lower, cut, decrease, bring down, drop, put down, diminish, mark down
        View synonyms
    • 3Earn a specified sum as a wage.

  • knock off

    • Stop work.

      • ‘They worked on the project three or four afternoons a week, knocking off around five to drink beer and talk.’
      • ‘The typical Australian working day starts in the sunshine at 8am, and shortly after everyone knocks off at 4pm, the parks will be full of men chucking a ball about until the sun goes down.’
      • ‘Why can't they have patrols instead of knocking off from work early in the day.’
      • ‘After a frantic week at work I am planning on knocking off a little early today.’
      • ‘I think I'll knock off for the day and have a nice cup of coffee.’
      stop work, finish work, finish working, clock off, close shop, shut down, leave work, finish the working day
      View synonyms
  • knock someone off

    • 1Kill someone.

      • ‘In that film, McCormack is a devilish child who begins knocking off fellow classmates and even the family gardener when they dare to get in her way.’
      • ‘The plot has a vengeful wife determined to knock off her philandering husband…, but the fellow proves strangely indestructible.’
      • ‘In fact, I strongly suspect he's concocting a game of his own which involves knocking off family members one by one.’
      • ‘They started robbing graves but found the demand for bodies outstripped supply so they started knocking off Edinburgh lowlifes who they reasoned would not be missed.’
      kill, murder, assassinate, do to death, do away with, make away with, get rid of, dispose of, eliminate, liquidate, terminate, finish off
      View synonyms
    • 2Have sexual intercourse with a woman.

      have sexual intercourse, have sexual intercourse with, make love, make love to, sleep together, sleep with, go to bed together, go to bed with
      View synonyms
  • knock something off

    • 1Produce a piece of work quickly and easily, especially to order.

      • ‘The boys amble about swapping melodies whilst knocking off a string of sunshine West Coast pop hits with unerring ease.’
      • ‘I've been up for an hour or so knocking off a couple of pieces two whole days before the deadline.’
      produce, make, turn out, create, construct, assemble, fashion, put together, fabricate
      View synonyms
    • 2Deduct an amount from a total.

      ‘when the bill came, they knocked off $600 because of a little scratch’
      • ‘Opting for third-party insurance consistently knocks about a third off the cost of your premium.’
      • ‘The very least they could do is knock a few pounds off our electricity bills, just as a gesture of good faith.’
      • ‘Turn down your central heating: a one-degree adjustment on your thermostat could knock hundreds of pounds off your fuel bill.’
      • ‘Most economists' models are built on what happened in the '70s, and they tell us basically that each $US 10 rise in the oil price knocks about 0.5 per cent off economic growth.’
      • ‘The argument is that it will save the consumers on the their weekly shopping bill, knocking about 500 off the total annual grocery bill.’
      • ‘A slightly more restrictive exhaust system knocks 5 hp off the engine's 220 hp output.’
      • ‘The food was bad, though, and we sent it back and they knocked the charge off our bill.’
      • ‘And don't forget to mention that immobilizer and alarm - they could each knock 10% off your quote.’
      • ‘The government is now trying to persuade its largest creditors to knock some $4 billion off that figure.’
      • ‘Economists have calculated that a $10 a barrel rise in oil prices knocks about 0.5 percentage points off world growth after 12 to 18 months.’
      deduct, take off, subtract, take away, dock, debit, remove
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    • 3Steal something.

      • ‘She'd heard about all the trouble we'd been having with vandals and thieves knocking our gear off, so she said she would feel safer if the posters were inside.’
      steal, purloin, take, make off with, abscond with, pilfer, misappropriate
      View synonyms
      1. 3.1Make an illegal copy of a product.
        • ‘Oh, well, they'll probably sell a load of them at that price before some knocks it off for $5.’
  • knock someone out

    • 1Make a person unconscious, typically with a blow to the head.

      • ‘The blow didn't knock her out, but she crashed to the floor and struggled for breath.’
      • ‘The only reason I could think of that she wouldn't answer me would be if she was injured or knocked out.’
      • ‘He fell back through the air, slamming his head into the ground hard enough to knock himself out.’
      • ‘Scottsdale went down next; a blow to his head knocked him out cold.’
      • ‘The blows knocked me out and the last thing I remember was him screaming: ‘It's all your fault!’’
      • ‘So I took some medicine which knocked me out and I slept until 9am.’
      • ‘He fell, knocked himself out and lay unconscious for hours.’
      • ‘She's on some mixture of antibiotics and cold medicine that knocks her out for hours at a time.’
      • ‘I took my eye off the road and walked into a lampost, knocking myself out.’
      • ‘The injured police officers mostly suffered broken bones while one was knocked out after being hit by a flying brick.’
      stun, strike unconscious, knock unconscious, render unconscious, knock senseless, stupefy, daze, lay out, floor, prostrate, level
      View synonyms
      1. 1.1Knock down (a boxer) for a count of ten, thereby winning the contest.
        • ‘Just for the record, I picked Frazier to knock Foreman out in 1973.’
        • ‘Remember, Holyfield predicted that he would knock Lewis out in the third round.’
        • ‘In 1959, London had been knocked out in 11 rounds by Patterson in Indianapolis.’
        • ‘In a fight similar to Frazier's destruction of Bob Foster, Tyson knocked Spinks out in the first round.’
        • ‘I have not a doubt that had Foreman and Tyson fought anytime between 1990 and 1997 that Foreman would have knocked Tyson out inside of three rounds.’
      2. 1.2informal Work so hard that one is exhausted.
        • ‘We get paid the same money without knocking ourselves out.’
        • ‘If knocking myself out to achieve success will bring me that kind of happiness, forget it!’
        • ‘Still, compared to important experiences like meeting my husband and having my kids, having lots of money doesn't seem to be an experience worth knocking yourself out for.’
        • ‘It's a truism that career ladders are based on the traditional male life plan - he knocks himself out in his 20s and 30s while his wife raises the kids, mends his socks and types his papers.’
        • ‘Other times I knock myself out trying too hard to be nice to people.’
        • ‘Our sales reps are constantly out there training and supporting retailers, doing store openings and just knocking themselves out to help dealers.’
        • ‘I can see I'm unlikely to get all the paintings done I'd hoped to, unless I really knock myself out.’
        • ‘After a long, discouraging period, she asked a friend, ‘What am I knocking myself out for with guys?’’
        work hard, labour, work one's fingers to the bone, work like a trojan, work like a dog, work day and night, exert oneself, keep at it, keep one's nose to the grindstone, grind away, slave away, grub away, plough away, plod away
        View synonyms
      3. 1.3informal Astonish or greatly impress someone.
        • ‘This is the kind of movie that knocks you out with the buildings alone.’
        • ‘And having guys who give me that, and bring me lovely presents… Well, it just really knocks me out sometimes.’
        • ‘‘I am knocked out by it - really stunned,’ said Josephine, whose award marks Adult Learners Week in the Eastern region.’
        • ‘You know, in his novel The Fourth Hand, Irving does something so great, it just knocked me out.’
        • ‘The Hollywood Reporter stated that ‘this movie knocks you out with an astonishing blend of hyper-realism, visual complexity and powerful themes’.’
        • ‘At that gig, they just blew me away, just knocked me out.’
        • ‘The Corolla had already knocked me out with its exquisite style and luxury, its perfectly pitched sense of fun, its innovative design.’
        overwhelm, overpower, stun, stupefy, amaze, astound, astonish, stagger, take someone's breath away, leave someone open-mouthed, dumbfound, confound, take aback
        View synonyms
  • knock something out

    • 1Destroy a machine or damage it so that it stops working.

      • ‘The earthquake also knocked out power lines on the island.’
      • ‘Tragically, the hit knocked out power and radio contact with the three escort ships.’
      • ‘Telephone services have been knocked out in several parts of the capital.’
      • ‘The guerrillas sabotaged a dam producing a third of the country's electricity, knocking out power in the nation's capital.’
      • ‘The explosion had knocked out his ship's engines and sent him on an uncontrollable spin.’
      • ‘In 1989 a solar flare that hit the Earth directly actually knocked out a whole power grid in Quebec.’
      • ‘The explosion damaged the right engine and flight controls, knocking out both hydraulic systems.’
      • ‘Water and sewage lines were heavily damaged and electricity in the area was knocked out after the main transformer was hit.’
      • ‘A bolt of lightning hit the plane, knocking out the engine.’
      • ‘On Prince Edward Island, the storm knocked out power and sank boats at the Charlottetown yacht club.’
      • ‘Lightning caused chaos in York today, striking two houses and knocking out rail signalling equipment to bring trains to a halt.’
      1. 1.1Destroy or disable enemy installations or equipment.
        • ‘His only option was to chase the enemy ships, and knock them out while they were still running.’
    • 2Produce work at a steady fast rate.

      ‘if you knock out a thousand words a day you'll soon have it finished’
      • ‘They have been knocking out folk classics since 1975 and have performed in a variety of clubs across the county.’
      • ‘They became the country version of The Rat Pack, getting into trouble together and knocking out hit after hit.’
      • ‘It was taking me about 3-4 weeks a month to write each script, and she told me how very foolish this was, when I could have knocked them out and been making real money.’
    • 3Empty a tobacco pipe by tapping it against a surface.

  • knock someone over

    • (especially of a vehicle) strike or collide with someone so as to cause them to fall to the ground.

      ‘a boy on a bike knocked him over and broke his glasses’
  • knock something over

    • Rob a store or similar establishment.

      ‘they knocked over a liquor store’
      • ‘If their children develop behavioral disorders at school, drop out, turn to drugs and begin knocking off 7-Elevens—they won't be surprised.’
      • ‘First they're nicking comic books, then knocking off whole banks!’
      • ‘If I'd knocked over a liquor store that day instead of accepting John's offer, I'd have been out of prison and off parole long before now.’
  • knock someone sideways

    • Astonish someone.

      • ‘The sheer wealth and size and richness of America knocked me sideways.’
      • ‘When they performed this on TOTP, I was knocked sideways.’
      • ‘Every now and then, something came up which would completely knock you sideways.’
      • ‘But Preston were knocked sideways by the shock of seeing their impregnable lead suddenly wiped out.’
      • ‘That said, most of what he plays washes over me these days - but once in a while, something comes along and knocks you sideways.’
      overwhelm, overpower, stun, stupefy, amaze, astound, astonish, stagger, take someone's breath away, leave someone open-mouthed, dumbfound, confound, take aback
      View synonyms
  • knock something together

    • Assemble something in a hasty and makeshift way.

      • ‘You can't just knock these things together in a couple of hours.’
      • ‘Well, they did manage to knock together a business plan and get a grant from Inverness Enterprise.’
      • ‘It would take him no time at all to knock together a chicken coop and it's not like they don't have enough room for it.’
      • ‘He's knocking some tracks together and trying to get an album together at the moment.’
      • ‘One evening we arrived at his home and found his wife had not returned from a meeting so I knocked together a salad for us from the contents of their fridge.’
      • ‘First-aid and tool kits were knocked together from bits and pieces, and numerous repairs and modifications made the boat safer and diving from her easier.’
      • ‘He responded that as the questions were largely what might pop into the head of whoever knocked the survey together, one should perhaps not read too much into them.’
      • ‘I knocked a nice dinner together - thick-cut ham, bubble & squeak, tomato salad and baked beans, followed by a pot of black cherry yoghurt - and enjoyed it greatly.’
      • ‘He picks up a 3 - D model which looks like something a Blue Peter presenter might have knocked together out of chicken wire, and peers at me through it.’
      • ‘I've knocked together a little Perl script.’
  • knock someone up

    • 1Make a woman pregnant.

      make pregnant, impregnate, inseminate
      View synonyms
    • 2Knock at someone's door.

      • ‘Eventually, after having no luck at all with the key, I had to go next door and knock them up.’
      • ‘I'll knock you up at five to seven and I'd like you downstairs for breakfast at seven sharp.’
      • ‘One Lib Dem peer was pounding the pavements all day, knocking up voters.’
      • ‘Some were formal duties, such as inspecting weights and measures or inspecting bridges, others were informal, such as knocking people up early in the morning for work.’
      wake, wake up, waken, awaken, call, rouse, arouse, get out of bed, get up
      View synonyms
  • knock around (or about)

    • 1Travel without a specific purpose.

      ‘for a couple of years she and I knocked around the Mediterranean’
      • ‘I've been trying to keep busy over the last few days as knocking around the house in the middle of the week, when my wife is at work and Zachery is at school is a strangely hollow experience.’
      • ‘As every day is different, I think about where I'm going and dress accordingly, but I'm at my happiest knocking about in grungy old gardening things.’
      • ‘Weiss has been knocking around L.A. for decades, to the point that he's now considered a fixture on the scene.’
      • ‘His years knocking around what was then known as the Far East as a freelance writer and journalist had given him an encyclopaedic knowledge of tropical conditions.’
      • ‘I should point out that despite several years of Spanish and some time knocking around in Germany, I'm a hopeless monoglot.’
      • ‘I highly recommend it if you're knocking around Cornwall and have a spare day out.’
      wander, roam, rove, range, travel, travel idly, journey, voyage, globetrot, drift, coast, meander, gad about, gallivant, jaunt, take a trip, go on a trip
      View synonyms
      1. 1.1Happen to be present.
        ‘it gets confusing when there are too many people knocking about’
        • ‘I conjectured on the basis of their compilation appearances that the band had been knocking about for a while, and they may very well have been, but this new single is actually their debut release.’
        • ‘Suddenly songs that had been knocking around in his head for more than a decade were finding new life.’
        • ‘Unlike some convertible models that were knocking around a decade or so ago, the one big difference drivers of the new 3 - Series should notice is its stability.’
        • ‘There are loads of interesting foreigners knocking about.’
        • ‘You've got the Trafford Centre and the Arndale Centre, of course, which are fairly well known, but then there's all sorts of smaller places knocking around.’
        • ‘There's a huge amount of real evidence knocking around that's being ignored by the media.’
        • ‘Although I think I've fixed everything on the front page of the site, there will inevitably be a few broken links knocking around the place.’
        • ‘Mind you, I don't have £130 or so knocking around, so it's a bit academic.’
        • ‘The issue has been knocking around for years, but it came to a head in 2000.’
        • ‘Our arts editor tells me she has a few CDs knocking about that I might want to listen to - so I go and take a look.’
      2. 1.2British Spend time with someone.
        ‘she knocked around with artists’
        • ‘Sometimes Robert's friend, 13-year-old Heather, would knock around with them.’
        • ‘He spent several years working the circuit before heading out to Nashville where he knocked around with the up-and-coming country stars.’
        • ‘I started knocking about with three people from the village.’
        • ‘‘When I was about 12 I started knocking around with boys from school - just kissing and touching at first,’ she said.’
        • ‘He has knocked around with Cuban revolutionaries and Chilean novelists, New York jazz musicians and San Francisco bohemians, in the global intellectual village that stretches from Lima to Mysore.’
        • ‘Des remembers fondly some of the expressions he learnt from mates he used to knock around with.’
        • ‘He's a nice lad, so are the pals he knocks around with, so I just can't imagine why anyone would do this.’
        • ‘They were the type of blokes that my mother dreaded I would end up knocking about with, the type who always had run-ins with the police.’
        • ‘I'm still friends with the same crowd of people I've knocked about with since I was 17.’
        • ‘The 15-year-old cousin he knocked around with in Redfern had been kicked out of their family's home town of Walgett as a public nuisance’
        associate, consort, keep company, go around, mix, socialize, have dealings, have to do with, accompany, escort
        View synonyms


Old English cnocian, of imitative origin.