Main definitions of fast in US English:

: fast1fast2



  • 1Moving or capable of moving at high speed.

    ‘a fast and powerful car’
    • ‘She pulled me onto the dance floor and I surprisingly had a lot of fun moving to the fast beat of the music.’
    • ‘He is the fastest horse I've ever had, and it was because of his speed that we kept him away from the others in the early stages.’
    • ‘Typical rotating frame experiments are performed in the fast exchange limit.’
    • ‘Jamie was into speed, he liked fast cars and the adrenaline rush of living life on the edge.’
    • ‘This bird is the world's fastest animal at 220 miles per hour.’
    • ‘However, it lacks power over 60 mph and up hills so you have to perform some fast gearchanges.’
    • ‘One of the fastest planes in the air is set to resume service on the London to New York route in the near future.’
    • ‘Focused on fast ships capable of 31 knots, this has put the wind up rivals, few of which have the resources to match this kind of investment.’
    • ‘The big key to Daytona is making sure you have a fast car that is capable of getting out front and staying there.’
    • ‘The competitors were doing 29 miles per hour for the first hour, an incredibly fast pace.’
    • ‘I got an Estonian passport stamp, courtesy of a short trip across the water from Finland on a very fast catamaran.’
    • ‘Alexis ignored the question and continued walking at a slightly faster pace.’
    • ‘Keep the defence tight, and when on offence, I want to see quick feet and fast passing.’
    • ‘A little speed will take care of that, letting you zip around and fight at an incredibly fast pace.’
    • ‘But do they emit overt commercial messages that fast and possibly irresponsible driving is a good thing?’
    • ‘More importantly, they're purposely kept brief to maintain the fast pace of the game.’
    • ‘What You Waiting For is the benchmark for the album, immediately enjoyable with its fast lyrics and catchy melody.’
    • ‘Am I just different to the norm since I have never been a great lover of watching fast cars speeding around a piece of tarmac for an hour and a half?’
    • ‘Most countries retain fleets of small, fast vessels for coastal patrol.’
    • ‘Another fast ship of those times was the American Clipper the Flying Cloud.’
    speedy, quick, swift, rapid
    View synonyms
    1. 1.1 Performed or taking place at high speed; taking only a short time.
      ‘the journey was fast and enjoyable’
      • ‘Trainer Mark Hampton says that the fights are very fast and aggressive, in a series of short two-minute rounds.’
      • ‘It was a game which exuded excellent, fast play with good passing, finishing and sporting behaviour.’
      • ‘Correct and fast reforms in this area would help the country fight corruption more efficiently.’
      • ‘Jason Bright set the fastest lap in today's afternoon practice session.’
      • ‘Some of them actually buy a number of drinks and consume them quickly to get a fast kick.’
      • ‘Journalism is short-term and gratifying in a fast way, and inherently interactive.’
      • ‘I had the choice of a dingy subway leading south towards the delights of the town centre or a short walk to the railway station and a fast exit.’
      • ‘It provides fast and secure individual and group conference communication and transmits packed data and visuals.’
      • ‘On the one hand they can offer perfectly crafted pieces of writing just right for fast and enjoyable consumption.’
      • ‘It is a fast, snappy, moving show with short scenes and little time for scene changes during the blackouts.’
      • ‘On your return, toss it with hot, freshly cooked pasta, and you have a meal that is fast, light, fresh and colourful - and hot.’
      • ‘The journey was short and fast, but strangely uncomfortable.’
      • ‘Freeze your favorites at home to share with friends, and make fast meals a snap.’
      • ‘They want to charge fans with fast web connections to watch footage, but there are two massive obstacles in their way.’
      • ‘They were saying the game is a lot faster than they thought it would be and you need a lot more endurance and speed.’
      • ‘Their reputation for fairness has been tainted by unscrupulous firms out to make fast money.’
      • ‘But when they are located, white bass can provide such fast and enjoyable fishing!’
      • ‘Unfortunately, with the degree of complications, any hope of a fast resolution has faded.’
      • ‘Scanning is fast and can be performed in the background so you can carry on working.’
      • ‘On the one hand, everything has to be very fast and superficial - a sound bite that you can grab in a second.’
      speedy, quick, swift, rapid
      View synonyms
    2. 1.2 Performing or able to perform a particular type of action quickly.
      ‘a fast reader’
      • ‘Far be it from me to say that this was a bad exam, suffice to say it was an exam in which fast writers were rewarded, at the expense of those without bionic hands.’
      • ‘I'm a fast learner, or they are fast teachers, but it's damn cool.’
      • ‘Even for a fast learner, though, four months is an awfully short time to cram.’
      • ‘But this is a very fast printer able to cope with heavy workloads.’
      • ‘To make such bold statements about any fast bowler is brave verging on foolhardy.’
      • ‘He was a fast learner, able to look back at his own mistakes and improve.’
      • ‘I'm a strong, fast walker who has to make a deliberate effort to slow down when in company.’
      • ‘Tillman is best in press coverage; his tight hips hinder him when he has to play off fast receivers.’
      • ‘Yorkshire are waiting for a fitness report which will reveal if the fast bowler will be able to play tomorrow.’
      • ‘A predator in every sense of the term, he was a giant among fast bowlers.’
      • ‘Unless you're a fast reader who can keep a clear head, there's a good chance the narrative will speed off and leave you behind.’
      • ‘He claims not to be a fast writer, just someone who responds well to pressure.’
      • ‘The band feature two capable and incredibly fast guitarists.’
    3. 1.3 Allowing people or things to move at high speed.
      ‘a wide, fast road’
      • ‘He's another who handles a fast surface and a repeat of his creditable second to Lord Of The Turf at Galway will see him land this.’
      • ‘And as the sun continues to shine, so do the hopes of Inn At The Top - who favours the firm, fast ground.’
      • ‘The first mistake was to choose indoor carpet, a fast surface, that suited Leander's serve and volley game.’
      • ‘But on a lightening fast surface, the British No.2 was always likely to be a troublesome competitor.’
      • ‘He was promoted to the BP-Ford squad for his experience and knowledge of the dauntingly fast Finnish roads.’
      • ‘Faint Heart was a costly failure at Galway, going down by a length to Right Key, but was all at sea on the fast surface then.’
      • ‘Our fastest roads (our motorways) are also our safest.’
      • ‘The Brisbane pitch is fast and bouncy so I think we may just lose the first Test match.’
      • ‘The Gonubie course is fast, but also requires strength, both of a physical and mental nature.’
      • ‘It was a fast, flat course over two large adjacent areas joined by a steep bank.’
      • ‘Further than that, the Bught Park is traditionally a fast surface, an ideal venue for the sharp stick work both sets of forwards favour.’
      • ‘He did well to finish on the predominantly flat fast course to finish in the top 70.’
      • ‘It's not a high-speed circuit, there are not many fast corners.’
      • ‘The King George VI Chase at Kempton could be next for the horse if the ground was to come up on the fast side and rule out Best Mate.’
      • ‘A good 10 km to blast away the cobwebs is an excellent idea and this is a fast course where personal bests are quite possible.’
      • ‘The final section from the Bolt Shelter to the road is fast, flat, and fun.’
      • ‘He got off the mark over fences at Kilbeggan, beating Lantern Leader four and a half lengths, and will revel in the fast surface.’
      • ‘Quarterback Kurt Warner will take advantage of the fast surface and the speed of his receivers.’
      • ‘This 2 mile road course is very fast and tricky.’
      • ‘He was always close to the lead, but could only stay on one-paced in the closing stages and may have found the surface on the fast side.’
      • ‘This track is very demanding for drivers with fast corners and it's enjoyable to drive here.’
    4. 1.4 (of a playing field) likely to make the ball bounce or run quickly or to allow competitors to reach a high speed.
      • ‘Its not a super fast track, but it is very technical with some great corners and elevation changes.’
      • ‘I'm still missing a little speed, which you need on these fast indoor courts.’
      • ‘The surface of the pitch was outstanding and the outfield was fast and true.’
      • ‘Taking the fast outfield into consideration, fans could be in for a rather heavy-scoring game.’
      • ‘Both batsmen got in some early practice, taking advantage of friendly bowling from the PCA XI and a fast outfield.’
  • 2predicative or as complement (of a clock or watch) showing a time ahead of the correct time.

    ‘I keep my watch fifteen minutes fast’
    • ‘The calendar is loaded, the meter is ticking and that damn clock has to be fast, doesn't it?’
    • ‘It's 2:30 by my watch (though my watch is a bit fast), and we're still in Portland.’
    • ‘Perhaps our watches were a little fast, or our internal clocks had been affected by the huge amount of alcohol in our systems.’
    • ‘The alarm clock is an hour fast.’
  • 3Firmly fixed or attached.

    ‘he made a rope fast to each corner’
    • ‘We sent boats with ropes and hawsers to the rocks, wound a rope round a rock, made a hawser fast to the rope, and swung to it with a length of hawser.’
    • ‘Dockhands caught the lines and pulled the ship in and made it fast.’
    secure, secured, fastened, tight, firmly fixed
    attach, fasten, secure, fix, affix, join, connect, couple, link, tie, tie up, bind, fetter, strap, rope, tether, truss, lash, hitch, moor, anchor, yoke, chain
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    1. 3.1 (of friends) close and loyal.
      • ‘Alex got along with everyone he met, so there were no doubts in my mind they'd become fast friends.’
      • ‘A year ago, the two were fast allies.’
      • ‘He has made a fast friend in the class, another little boy whom he adores.’
      • ‘The two men get to drinking, and then to talking, and it's not long before they've become fast friends.’
      • ‘I, too, was attracted to Steve's courage and charisma, and we became fast friends.’
      • ‘Over the years we have become fast friends, and my wife jokingly calls her my girlfriend.’
      • ‘JJ and I had become fast friends, not as close as Dane and I were but close enough.’
      • ‘The girls became fast friends during the trip - mostly due to their pranks on Kevin together.’
      • ‘I even went round to his house to apologise. We've been fast friends ever since.’
      • ‘After that moment they became fast friends, they got along so well, they spent much of each day with each other.’
      • ‘Drew and Henry became fast friends and worked together throughout the morning.’
      • ‘Being that both of them were musicians and liked a lot of the same bands, Shamus and Chase had become fast friends.’
      • ‘He became fast friends with Fred Gwynne, developing a chemistry that is obvious in The Munsters.’
      • ‘We became fast friends and I was the last man in England to speak to her on the day she died.’
      • ‘Nathan decides not to write the book, but he and Coleman become fast friends.’
      • ‘This is how I introduced my dog, Kye, to my cat, Johnny, and they became fast friends.’
      • ‘She became fast friends with Alicia, since she was closer in age than the rest of the sisters.’
      • ‘They became fast friends and studied international marketing and languages together at Dublin City University.’
      • ‘They fought the Soviets together and are fast friends.’
      • ‘Weeks had passed since that day and the two had become very fast friends.’
      loyal, devoted, faithful, firm, steadfast, staunch, true, boon, bosom, inseparable
      View synonyms
  • 4Photography
    (of a film) needing only a short exposure.

    • ‘For low light and fast shutter speeds you need a fast film and also a fast lens.’
    • ‘I used fast film, fast shutter speed, and zoomed in to fill the frame.’
    • ‘It's a good idea in any case to have a selection of slow, medium and fast film on hand at all times.’
    • ‘Again this is where you use the fast film and enlarge for the portrait.’
    • ‘This was big-time exposure country, and had I known in advance I would have brought my tripod and a stock of fast film!’
    1. 4.1 (of a lens) having a large aperture and therefore allowing short exposure times.
      • ‘So depending on the lighting conditions you may need to use fast lenses and/or high speed film.’
      • ‘Obviously you will want to use your fastest lens, let me know what it is and I will try to suggest a film for you to use.’
      • ‘It should be lighter, with a fairly fast lens, and reasonable responsiveness and battery life.’
  • 5(of a dye) not fading in light or when washed.

    • ‘From the tubes, a not so fast dye is extracted for colouring silk.’
    • ‘The setup had to be optimized for response times below microseconds by using a fast dye and by applying a fast fluorescence detector.’
    • ‘All those shops selling these goods have to give consumers the assurance that they are fast colour, non-shrinkable and correct size.’
    indelible, lasting, permanent, stable
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  • 6(of a person or lifestyle) engaging in or involving exciting or shocking activities.

    ‘the fast life she led in London’
    • ‘A pair of red stilettos, maybe you like attention and things on the fast side.’
    • ‘Reid is one such fellow, his name frequently prompting the response 'Who?', even from those of his compatriots with a passing interest in wheels and fast living.’
    • ‘The actor was as famous for his fast living, hard drinking, and acerbic wit as for his performances.’
    • ‘Mumbai, on the other hand, was used to money and a fast lifestyle.’
    • ‘Tom Adair examines the short life and fast times of an all - American great.’
    • ‘Lack of strong family bonds and fast lifestyle also contribute to this habit.’
    • ‘In the beginning it was a hit with a young, fast crowd because of one of its owners, Karim Amatullah.’
    wild, dissipated, dissolute, debauched, intemperate, immoderate, louche, rakish, decadent, unrestrained, reckless, profligate, self-indulgent, shameless, sinful, immoral, extravagant
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  • 1At high speed.

    ‘he was driving too fast’
    • ‘As to the matter of how fast our speeding knight of the road was in fact travelling, various readers were keen to take us to task on the finer points of metric etiquette.’
    • ‘They shoveled the food into their mouths so fast it was like a speed eating contest.’
    • ‘She was then fired, allegedly because she did not type fast enough to keep with the creative discussions.’
    • ‘I stalled and swore, went too fast or too slow, but he was patient and spoke to me in soothing tones.’
    • ‘I had to walk quite fast to keep up with him.’
    • ‘Ben was walking slightly faster now but still had trouble keeping up.’
    • ‘I wheeze at night and cough during workouts, but I am swimming fast.’
    • ‘Inherent in elevator performance is the speed and capacity of each elevator and how fast the doors open and close.’
    • ‘Responsible drivers know that driving very fast or recklessly will endanger their life and other people's.’
    • ‘At that point, the US share market had been growing extremely fast for several years.’
    • ‘Rod the sound engineer was advising me on speed (that's how fast you speak, not the drug), and on timing.’
    • ‘The friendly council have opened a nice new road and it's so smooth you pick up quite a lot of speed before you realise how fast you are going.’
    • ‘As a result, the systems built with dual-core processors can perform impressively fast.’
    • ‘I didn't think it was possible, but my heart began to beat even faster.’
    • ‘Tyler moved so swiftly and so fast he lived up to our team's name: The Black Panthers.’
    • ‘My heart beating even faster, what was I supposed to do?’
    • ‘Some think it's fun to whizz over the speed hump and see how fast they can take off.’
    • ‘Whoever was driving was driving so fast I couldn't see anything out the window.’
    • ‘You have to run really fast to get away from Lynette when she's on a make-up rampage.’
    • ‘She says this all very fast and energetically like she has held it in there for so long, and needs to tell someone.’
    • ‘The way to achieve success in swimming is obviously to swim faster over a given distance.’
    quickly, rapidly, swiftly, speedily, briskly, at speed, at full speed, at full tilt
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    1. 1.1 Within a short time.
      ‘they think they're going to get rich fast’
      • ‘Passengers had to act fast to save their own lives.’
      • ‘Cecil felt things were just going a bit too fast for his liking.’
      • ‘The schedule will also depend on how fast consumers will switch to 3G mobile services.’
      • ‘So, very fast the discussion moved into practical problems: who would be the best to do the job?’
      • ‘Everything happened really fast, there was a lot of people.’
      • ‘Kids grow up so fast nowadays, don't they?’
      • ‘Its been over a week since I got back from Tokyo, memories fade so fast!’
      • ‘He spoke of his days in the school and how fast the fifteen years since he left had gone.’
      • ‘You can specify which mouse button will open menus, how fast the mouse responds to double clicks and so forth.’
      • ‘We have acted fast to stop the harm but the problem has not gone away.’
      • ‘Angel hit the ground and didn't recover fast enough to avoid a powerful kick to her ribs.’
      • ‘Yeah, she is acting like an idiot, but everything's happening really fast for her.’
      • ‘The fuel crisis is the immediate cause, and whether that will run and run or fade away as fast as it blew up is for the moment hard to say.’
      • ‘A sign of the success of the megachurches in this country and elsewhere is that they are fast becoming mainstream.’
      • ‘They knew they had to act fast to save this young man's life.’
      • ‘Finding mechanisms that can react fast enough to prevent escalation could prove problematic.’
      • ‘However, the burning sensation didn't fade quite fast enough.’
      • ‘These vehicles are also fast becoming a lifestyle choice, with enhanced styling adding to the popularity of the genre.’
      • ‘Now traditional Highland crofting is fast becoming the lifestyle of choice for stress-ridden city folk.’
      • ‘The news spread fast and the crowds became a crush within a few hours.’
  • 2So as to be hard to move; securely.

    ‘the ship was held fast by the anchor chain’
    • ‘Moses hid his face from the Lord, and though his eyes were shut fast, his ears were wide open.’
    • ‘Nothing sticks so fast in the mind as a groundless sense of guilt, Kafka told his friend.’
    • ‘Why is the anchor stuck so fast in the wreckage?’
    • ‘Maybe you are like an idol to her to have her cling to you so fast.’
    • ‘Like a sailing barque stuck fast in the Doldrums, I lurch slowly in the swell, holding my breath and waiting for a wind to fill the sails.’
    • ‘Mason tried to open the door, but it was locked fast.’
    • ‘It's no use, the door's stuck fast!’
    • ‘While she was there, aged 16, she watched whaling boats set out on the North Sea, and heard reports of one becoming stuck fast in the ice.’
    securely, tightly, immovably, fixedly, firmly
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  • 3So as to be hard to wake.

    ‘they were too fast asleep to reply’
    • ‘The woman lay fast asleep under a blanket on her bed, until the noise of the snoring outside stirred her.’
    • ‘When she did awake, she discovered Jared fast asleep in his cot.’
    • ‘In rooms across the hall my parents and my in-laws are no doubt fast asleep, tuckered out from days of good food and fresh air.’
    • ‘A few days later, Chillingworth finds Dimmesdale fast asleep in a chair at midday.’
    • ‘There in the middle was a solitary deck chair with the great man fast asleep and the cub wrapped in his arms.’
    • ‘Without the constant attention of family and friends, she can spend days fast asleep.’
    • ‘Ruth sat at the back of the bus, with Dominic fast asleep on her shoulder.’
    • ‘Arriving back at the apartment, she unlocked the door and found Kelly fast asleep, curled up on the couch.’
    • ‘He found the two encircled in one another's arms fast asleep.’
    • ‘Looking down she saw little Callum fast asleep in her arms, resting his head on her chest.’
    • ‘He glanced over his shoulder to find Bill fast asleep at another computer.’
    • ‘By the time I returned, she was huddled under the blankets fast asleep.’
    • ‘Sure enough when we looked in our room there were Chris and Brandon fast asleep.’
    • ‘I looked around for a second and saw Jessica fast asleep on the couch.’
    • ‘He was just sitting with his back to me while his brother was laying spread out on a couple of chairs fast asleep.’
    • ‘She wondered what had made her feel so safe when she looked over and saw Darien fast asleep in a chair next to the bed.’
    • ‘The buzzers would go off in the night and when the nurses came to see what was wrong they would find the patients fast asleep.’
    • ‘Amanda wandered back to the beach to find Nora fast asleep in the shade.’
    • ‘I thought nothing of flopping onto the hotel bed and falling fast asleep.’
    • ‘Glancing in Ralph's room, she saw the old man fast asleep beneath his covers.’
    deeply, sound, completely
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  • pull a fast one

    • informal Try to gain an unfair advantage.

      ‘Joey pulled a fast one on us’
      • ‘She plays a petty shop owner in a village, whose idea of a joke is pulling a fast one on customers.’
      • ‘The woman they have been calling a political novice has just pulled a fast one on them.’
      • ‘It's tough when a close pal pulls a fast one on you.’
      • ‘You aren't pulling a fast one on me, are you?’
      • ‘It showed that management was just trying to pull a fast one.’
      • ‘Or were the prosecutors trying to pull a fast one?’
      • ‘To be honest, we thought he was trying to pull a fast one.’
      • ‘Are people playing by the rules of the game or pulling a fast one?’
      • ‘It tickles me that these folks think they are pulling a fast one on the Big Guy.’
      • ‘But will customers think the fast food giant is pulling a fast one?’
      outsmart, outwit, out-think, outmanoeuvre, outplay, be cleverer than, steal a march on, trick, gull, make a fool of, get the better of
      View synonyms


Old English fæst ‘firmly fixed, steadfast’ and fæste ‘firmly’, of Germanic origin; related to Dutch vast and German fest ‘firm, solid’ and fast ‘almost’. In Middle English the adverb developed the senses ‘strongly, vigorously’ (compare with run hard), and ‘close, immediate’ (just surviving in the archaic fast by; compare with hard by), hence ‘closely, immediately’ and ‘quickly’; the idea of rapid movement was then reflected in adjectival use.




Main definitions of fast in US English:

: fast1fast2



[no object]
  • Abstain from all or some kinds of food or drink, especially as a religious observance.

    • ‘A set meal was given at lunch time after the supplement to subjects who had fasted overnight.’
    • ‘The friars inhabited the cloister, sang the matins, fasted and prayed within the walls and lived their lives in Banada six centuries ago.’
    • ‘The male fasts while incubating for 60 days till the female returns at hatching time.’
    • ‘Like every pious Muslim, he prays five times a day and fasts during Ramadan.’
    • ‘They smiled and said, of course they were hungry but did not mind because they were fasting for Allah.’
    • ‘So fasting in Lent or not eating meat on Fridays seems odd, even eccentric now.’
    • ‘Both groups fasted for fourteen hours before taking part in the experiment.’
    • ‘Smith and Henderson meditated and fasted for five days prior to the performance, which culminated in a Tantric ritual.’
    • ‘All subjects fasted for more than four hours before the study.’
    • ‘Most nuns fasted to keep the rule: the anorexics fasted to break it.’
    • ‘The term fasting glycemia refers to your blood sugar level after you've fasted overnight or for at least 8 hours.’
    • ‘It is a land where the faithful are summoned by drums, where the whole population fasts two days a week and where no-one smokes because the Church disapproves of the habit.’
    • ‘That's why the preferred way to test your blood sugar is to take a blood sample from a vein in your arm after you've fasted overnight or for at least eight hours.’
    • ‘Each group fasted for 14 hours prior to taking part in the study.’
    • ‘Blood samples were taken after women had fasted for six hours.’
    • ‘Three protesters fasted for three days and held a vigil outside the embassy.’
    • ‘Muslims prayed, fasted, and performed charitable acts from Oct 15 to Nov 14 for Ramadan.’
    • ‘Prior to seeing a movie, the volunteers fasted overnight and were given a baseline blood vessel reactivity test to measure what is known as flow-mediated vasodilation.’
    • ‘On inquiring, he learned that this man was fasting frequently to atone for his sins.’
    • ‘Twenty years ago she started fasting regularly because she felt a spiritual need to do so.’
    abstain from food, refrain from eating, deny oneself food, go without food, go hungry, eat nothing, starve oneself
    View synonyms


  • An act or period of fasting.

    ‘a five-day fast’
    • ‘At sunset, the conclusion of daily fasts, participating students were invited to share a delicious meal prepared by local Muslim restaurants.’
    • ‘The sponsored fasts will take place between February 28 and March 1st.’
    • ‘On Christmas Day they can eat these things, but the rituals centre more on the last day of the fast on Christmas Eve, he says.’
    • ‘I had done fasts before, then I had built up weight.’
    • ‘This criminal's regular fasts are little more than a sustained effort to bolster his profile.’
    • ‘And I will keep all the remaining fasts of the month of Ramazan.’
    • ‘The other day I asked one of my friends how his fast was going.’
    • ‘I know people that go on fasts for 30 days and work.’
    • ‘Adult polar bears lose approximately 0.85-0.9 kg of body mass per day during fasts.’
    • ‘Those who are taking part in the fast will be collecting in Belmullet on St. Patrick's Day.’
    • ‘In ancient times, fasts were traditional at the vernal and autumnal equinoxes and were believed to increase fertility.’
    • ‘Diets are prescriptive, like convent fasts - so much of this, so little of that.’
    • ‘Some of the fundraising events planned to help raise €17,000 include 24-hour fasts and an American tea party later in the year.’
    • ‘Mother, don't worry - sporadic fasts are very healthy.’
    • ‘Repeated juice fasts are recommended at intervals of every two months.’
    • ‘St. Thomas lived a life of austerity; his fasts, for instance, being in marked contrast to the luxury in which he might have lived if he chose.’
    • ‘A woman has died after several months on a hunger strike in protest against prison reforms, bringing the death toll from the fasts to 20.’
    • ‘In Washington, a veteran of the demonstrations was in the midst of a fast that began on Tuesday.’
    • ‘Juice or fruit fasts are common, restricting nutrient intake to only those specific food sources.’
    • ‘As above, birds retained access to water throughout the duration of the fast.’
    period of fasting, period of abstinence
    View synonyms


Old English fæstan (verb), of Germanic origin; related to Dutch vasten and German fasten, also to Old Norse fasta, the source of the noun.