Definition of deep in English:



  • 1Extending far down from the top or surface.

    ‘a deep gorge’
    ‘the lake was deep and cold’
    • ‘We have lakes that are cold and deep and we have lakes that are larger than some European countries.’
    • ‘One note of caution though, there is a very deep ditch near the tracks and if you get stuck in it it's a long ways to go for help.’
    • ‘Since it was built over a deep gorge, it was well protected against destructive forces.’
    • ‘There were none skilled in managing dog-sleighs and the horses very soon died in the cold, deep snow.’
    • ‘Because it was narrow and deep, the gorge was seldom influenced by the weather outside.’
    • ‘A series of relatively flat, broad steps climb to that valley of deep, cold snow.’
    • ‘Rocky gullets of white water open out into deep gorges where salmon lie waiting for water to continue their upstream journey.’
    • ‘The river may look placid, but it is cold, wide, deep and fast-flowing.’
    • ‘It is an astounding architectural monument, rising like a crusty castle from a plain broken by deep, dramatic gorges.’
    • ‘Although it is fresh, enclosed water with average visibility of around 10m, it can be cold and deep.’
    • ‘No one ever goes to the abyss because it's too wide and deep and creepy and cold.’
    • ‘Over millions of years, a small river had carved a deep gorge into the rock.’
    • ‘Only in the shadows of deep cold craters could you expect to find any, frozen and hidden.’
    • ‘Subsequently, the vehicle skidded off the road and fell into the deep gorge.’
    • ‘Just behind him, a deep trench has been cut in the pristine lawns and a team of archaeologists are busy scraping at the exposed soil.’
    • ‘The lake was deep and its surface smooth and flat.’
    • ‘The water is choppy, cold and deep - the chances are you can't even see the bottom.’
    • ‘Everywhere there are clear jade rivers with deep natural pools, surrounded by sun-warmed granite boulders.’
    • ‘The mountain scenery was totally awesome with spectacular peaks, glacial rivers and deep mountain gorges.’
    • ‘The steep cliffs tumble abruptly into the sea, scarred by deep gorges which drip with greenery.’
    extending far down
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    1. 1.1 Extending or situated far in from the outer edge or surface.
      ‘a deep alcove’
      ‘deep in the woods’
      • ‘Last September we went to the Italian Grand Prix at Monza, just in the general admission section which was deep in the woods.’
      • ‘The bar and grill may be deep in the basement, but the friendly waiting staff and chilled music maintain an upbeat mood and create a warm atmosphere.’
      • ‘Animals begin to colonize the basalt volcanoes when they are still deep beneath the sea surface.’
      • ‘Eleanor made sure she was deep enough in the pool before she turned around.’
      • ‘The cylinders will measure how much oxygen is consumed by organisms in the deep ocean.’
      • ‘They inhabit all tropical and warm temperate seas, from the surface to moderately deep levels.’
      • ‘The lounge was a comfortable and well-appointed room deep in the bowels of the ship.’
      • ‘I needed to know how deep in the forest he had been.’
      • ‘They have the ability to penetrate right into the deep layers of the skin and travel to various organs, glands and tissues of the body.’
      • ‘As they went even deeper into the forest the creatures got more menacing looking.’
      • ‘It helps to re-direct blood from the surface veins into the deep veins, and stops blood from flowing back out to the surface veins.’
      • ‘Though the bullets were too deep in his body to be removed, they didn't kill him.’
      • ‘White grubs feed on roots deeper in the soil.’
      • ‘Why is it impossible to pump water from very deep in the ground with a surface pump?’
      • ‘The frogs' eardrums are unusually deep in their skulls.’
      • ‘The question remains regarding how to merge these surface and deep structures.’
      • ‘After a time, when we knew that we were deep enough into the woods that other students wouldn't be around, we held hands.’
      • ‘I have also read that there are more accidents happening on these deep dives.’
      • ‘The grave generally is located in a riverbed or somewhere deep in the forest.’
      • ‘The focus this time around is on the extreme environments of the deep ocean floor and the weird and wonderful denizens that flourish there.’
      extending far back, extending far in, extending a long way back, extensive
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    2. 1.2predicative (after a measurement and in questions) extending a specified distance from the top, surface, or outer edge.
      ‘the well was 200 feet deep’
      • ‘Once Mohammed said that beyond the coral, the sea is 60 foot deep, I felt too scared to go out any further.’
      • ‘Adding more debt to a debt ridden business is like adding a sledge to the back of a man trudging through six foot deep snow.’
      • ‘Mr Croxford, whose mother lives in Haverfordwest, suffered a fatal 8cm deep wound to his heart.’
      • ‘Every day, the inmates have a task to perform - head into the surrounding desert and dig a hole five feet deep and five feet wide.’
      • ‘No trace of the car or the victim were ever found, only a 55 meter deep crater, and 500m of missing road.’
      • ‘Physically, how do you go about searching something two acres wide, and many feet deep?’
      • ‘The ground was still soft, it was only October, and in no time I had a hole a spade by a spade and a half wide, and maybe two feet deep.’
      • ‘The depth of a canal can vary from 10 to 15 metres, whereas creeks tend to be in the order of three metres deep.’
      • ‘Wearing surgical masks and gloves, men climbed down to the bottom of the square hole, about four metres deep.’
      • ‘As the level of the reservoir falls, it reveals mud several feet deep, silt deposited from upstream.’
      • ‘Most Icelanders are put to rest in a grave, which is two metres deep, in a churchyard subsequent to the appropriate ceremony.’
      • ‘That part of the Black Sea used to dump the waste is 2000 metres deep.’
      • ‘The engineers first dug a trench three feet wide and seventy feet deep or all the way down to the bedrock around the entire sixteen acres.’
      • ‘What are you going to do when the ground below you suddenly disappears and a 100 meter deep hole opens up?’
      • ‘The chapel is two feet high, 12 and a half inches wide and 15 inches deep.’
      • ‘In Keighley Fire Station - then the building on the left next to the bridge - the water was several feet deep.’
      • ‘After half a mile of climbing, the path levelled and the landscape opened out, there were drifts a couple of feet deep at gaps and gateways.’
      • ‘There was a cave formed by the water, which was about 15 metres deep, and probably the same high.’
      • ‘It was a problem getting this water to the surface as the average well was 100 feet deep.’
      • ‘It floated a short distance before becoming completely submerged in the river, thought to be between six and eight feet deep.’
      in depth, downwards, inwards, from top to bottom, from the surface, in vertical extent
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    3. 1.3in combination As far up or down as a specified point.
      ‘they stood waist-deep in the water’
    4. 1.4predicative In a specified number of ranks one behind another.
      in combination ‘they were standing three-deep at the bar’
      • ‘It was three-deep at the bar, with icy platters of oysters and glasses of sparkling wine littering the marble top.’
      • ‘The damp weather did not deter the crowd which was six deep in places.’
      • ‘Organized ranks, five deep and five wide, marched right below him.’
      • ‘On that afternoon the crowds lining Constitution Hill were three to four deep, waiting patiently to catch a glimpse of Edward VIII as he returned to Buckingham Palace.’
      • ‘Mostly I have seen them packed into crates five deep and obviously dying.’
      • ‘Sadly, without ranks of police four deep, the football fans will rip out each other's throats.’
    5. 1.5 Taking in or giving out a lot of air.
      ‘she took a deep breath’
      • ‘My brow burned, and I sucked a deep breath, sending the oxygen to my muscles.’
      • ‘A series of deep breaths can be done anywhere and at anytime.’
      • ‘Relax, take a deep breath and remember, it's not the end of the world.’
      • ‘He heard Joe heave a deep sigh behind him but he didn't turn to look at the younger man.’
      • ‘You can hear the echo of the long hours he's spent trying to understand in his deep sigh.’
      • ‘I walked a step behind him, taking deep intakes and trying to catch up with my breath.’
      • ‘There was then a short silence followed by a long, deep sigh.’
      • ‘She finally reached the surface, and took a deep breath of the cold, crisp, mountain air.’
      • ‘I took a deep breath and marched with Catherine to the front door.’
      • ‘Once she was settled in with an arm slung over his chest, she sighed a deep breath of relief.’
      • ‘The stadium lights glare down coldly as you inhale a deep breath of cold, crisp air.’
      • ‘She breathed out a deep sigh of regret that drew Lauren's attention back to Haley.’
      • ‘So the next time you have a major presentation/meeting, calm down take deep breaths for at least one minute.’
      • ‘Michael sighed, leaning his head back as he took a deep breath to calm himself.’
      • ‘The girl cast another glance behind, took a deep breath and stepped forward.’
      • ‘Nick let out a deep sigh and watched his breath turn to mist against the cold night air.’
      • ‘She took a deep breath and swallowed the sobs that were rising in her throat.’
      • ‘I take three slow deep breaths to steady my nerves as I prepare to spring like a tiger on its unsuspecting prey.’
      • ‘After you've taken a few deep breaths and enjoyed the rush of achieving your goal, where do you go next?’
      • ‘I slip out the front door, take a deep breath of the cold morning air, and start to stretch.’
    6. 1.6Cricket (of a fielding position) relatively distant from the batsman; near the boundary.
      ‘deep midwicket’
      • ‘Dravid was out attempting to hit a six, the ball landing with the deep midwicket fielder.’
      • ‘Skipper Dave Fallows hit the only six in the match but was caught at deep midwicket next ball for 24.’
      • ‘His shot lobs high into the air before landing short of Harmison at deep midwicket.’
      • ‘Blackwell deposited Gary Keedy into the pavilion for a massive six, but was then well caught at deep square-leg off Kyle Hogg.’
      • ‘He eventually holed out to a diving catch at deep cover by Jamie Glasson and walked off to a standing ovation.’
    7. 1.7 (in ball games) to or from a position far down or across the field.
      ‘a deep cross from Neill’
      • ‘It's hard to tell from the bleachers whether pitches are balls or strikes, and you lose sight of balls hit to the deep outfield.’
      • ‘If he has a weakness, it is a questionable ability to make the deep throw well.’
      • ‘He does much more than a traditional safety who just plays a deep center field.’
      • ‘He blasts a volley from a deep cross into the side-netting.’
      • ‘His deep cross nearly becomes a freak goal; it spins back towards the net and rolls right along the top of the crossbar and stays in play.’
      • ‘Adam Johnson's deep cross from the right found Martin Packer on the opposite flank.’
      • ‘John Olerud doubled to deep centerfield while the Twins manager summoned Joe Nathan.’
      • ‘Carr looked for Johnson on at least two other deep throws that fell incomplete.’
      • ‘After fielding the ball, however, the pitcher threw it way over the first baseman into deep right field.’
  • 2Very intense or extreme.

    ‘she was in deep trouble’
    ‘a deep sleep’
    • ‘They are in deep, deep trouble, and the economy will get worse and worse.’
    • ‘At the heart of the conflict between were deep disagreements over economic policy.’
    • ‘Waking, dreaming and deep sleep are the other three states, which are the normal states of consciousness.’
    • ‘It was like waking up from a deep sleep, I gradually became more aware of what was going on.’
    • ‘Stock markets have reacted to the deep uncertainties this year by marking time.’
    • ‘When citizens lack confidence in the basic institutions of democracy, the nation is in very deep trouble.’
    • ‘She almost transformed the audience from deep gloom into spontaneous applause.’
    • ‘There is no question of deep intoxication from drugs, poisons or other chemical agents.’
    • ‘Behind the question of course lies a deep ignorance of the reality of life in working class communities.’
    • ‘We think that humanity could be heading for deep trouble unless we take action very soon.’
    • ‘The policies they concocted, however, offered too little, too late and exposed deep division in White ranks.’
    • ‘Not only was the business in trouble, but the economy in the UK was in a deep recession.’
    • ‘If you found yourself playing head to head against him, you were in very deep trouble.’
    • ‘The mother-of-two was treated in intensive care after slipping into a deep coma after the accident.’
    • ‘Soon I fell into a deep slumber, listening to the mountain animals in the distance.’
    • ‘Pressure on the US dollar in the form of a deep recession or a balance of payments crisis in the US is unlikely.’
    • ‘Scotland is pinning its hopes on the retail sector to keep it out of a deep recession.’
    • ‘After a blissfully deep sleep I went out early in the morning to take photographs.’
    • ‘I closed my eyes as the sun began to set and drifted off into a deep sleep.’
    • ‘All of the medications presented have the potential to cause unplanned deep sedation.’
    sound, heavy, profound, intense
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    1. 2.1 (of an emotion or feeling) intensely felt.
      ‘deep disappointment’
      • ‘For her part, Jan has asked me to extend her deep gratitude to all who have been praying for her and the folks.’
      • ‘He said that all farmers are going through a nightmare of falling incomes and deep uncertainty about their futures.’
      • ‘With deep regret he saw the base in the distance, not wanting this moment to end.’
      • ‘She came in smiling then stopped hen she saw the deep puzzlement on her son's face.’
      • ‘Personal relationships are full of deep feelings and emotions but you need to wait for the right time to expose them.’
      • ‘She fell into deep confusion when close and intimate contact happened between them.’
      • ‘She has a tendency to use quite clinical language - which masks deep emotions, but can make her look a bit of a cold fish on the page.’
      • ‘Women were drawn to him, not just because of a taste for the powerful, but because he was a genuine romantic capable of deep affection.’
      • ‘The fact that no-one has certain answers to these questions is a cause for deep concern.’
      • ‘This place is home, if anywhere is, and I love it with a deep passion.’
      • ‘The club extend their deep gratitude to all who support the weekly draws.’
      • ‘Sandy was surprised that he answered questions about himself revealing a deep insecurity.’
      • ‘It was a deep feeling of dissatisfaction, and it was making ordinary people do very crazy things.’
      • ‘I have also tried to instill in my children a deep respect for natural healing.’
      • ‘Deepest sympathy is extended to his brothers and sisters, relatives and friends.’
      • ‘Underlying these questions was a deep uneasiness about the size and purpose of American power.’
      • ‘Since the worst news was confirmed, the collective feelings have changed to deep sadness - and anger.’
      • ‘The deepest sympathy of the community is extended to her family relatives and friends.’
      • ‘Her neighbours in Passage offer their deepest sympathy to her relatives and many friends.’
      • ‘That is the exact opposite of my intention, which is deadly serious and prompted by deep grief and fierce anger.’
      intense, heartfelt, deeply felt, fervent, ardent, impassioned, wholehearted, deep-seated, deep-rooted, thorough, thoroughgoing, serious
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    2. 2.2 Profound or penetrating in awareness or understanding.
      ‘a deep analysis’
      • ‘I must also take notice of her deep understanding of Middle Eastern affairs, despite the fact that she has never lived there.’
      • ‘I think he had a deep understanding of military matters and of leadership.’
      • ‘Any successful international expansion requires caution, patience and a deep understanding of the new market.’
      • ‘The people are warm and welcoming with a deep awareness of the past and great pride in the richness of their culture.’
      • ‘They deserve deep analysis and consideration in an objective fashion.’
      • ‘It seems a bit odd to try to package a fairly deep question in the context of a genre this fluffy and idiotic.’
      • ‘It is a subject of deep discussion and occasional confusion.’
      • ‘It has to be informed by a deep understanding of the period and its cosmology.’
      • ‘He opens by wringing his hands and asking three really deep questions.’
      • ‘A deep understanding of traditional music provides a firm foundation for his impressive body of work.’
      • ‘And Robin has sent a list of deep questions for us to answer - an interview he'll put on his very interesting site.’
      • ‘Behind the spectacles and deep thinking there is a forceful man, who is tough to argue with.’
      • ‘After 25 years of deep thought, Roger believes he has answered the eternal question as to why we are here.’
      • ‘He has a deep understanding of their characters, reaching out across the centuries to touch them as if they were old friends.’
      • ‘You can be effective in solving problems in society because you have a deep understanding of those problems and their origins.’
      • ‘It is grave, sometimes eloquent, responsive to sorrow, filled with deep questioning.’
      • ‘This is such an illuminating play and, at times, profoundly deep.’
      • ‘Of course this is a difficult test and requires deep study and travel throughout Africa.’
      • ‘Those who worked with him at the time have commented on his deep understanding of Canada and Canadian issues.’
      • ‘They like to have a deep understanding of how to do business.’
      clever, intelligent, intellectual
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    3. 2.3 Difficult to understand.
      ‘this is all getting too deep for me’
      • ‘I seem to remember getting into some fairly deep Samuel Beckett.’
      • ‘He tries to make me feel better by dressing it up in deep and intellectual language.’
      • ‘He was equally ready to discuss a problem with a first year student or a colleague, to work through an elementary point or puzzle over a deep problem.’
      • ‘For once the child was quiescent as if it were asleep, or pondering upon some deep enigma.’
      • ‘All in all there are plotlines and deep character developments that your average three year old just can't appreciate.’
      • ‘The struggles of the American writer to explain the deep mysteries of the British character are pure joy.’
      • ‘Nothing deep or philosophical, you understand, just: how is this going to get better?’
      • ‘This turns out to be an argument which raises deep and difficult issues, and there is no consensus about the proper response to it.’
      • ‘But I shall say nothing about the deep and difficult problems this contention raises.’
      • ‘Do you understand what deep and metaphysical things he is trying to say?’
      • ‘But it's very deep and mysterious and superbly written, and superbly translated too.’
      • ‘They understood something very deep that we more secular types never learned.’
      obscure, mysterious, hidden, secret, unfathomable, fathomless, opaque, abstruse, recondite, esoteric, enigmatic, arcane, delphic
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    4. 2.4deep in Fully absorbed or involved in (a state or activity)
      ‘they were deep in their own thoughts’
      • ‘I pointed to the two of them, still deep in conversation by the karaoke machine.’
      • ‘She must have been deep in thought because she didn't even notice Vivian standing in the doorway.’
      • ‘She was taking very little bites of food and looked very deep in thought.’
      • ‘Jay and Stella were deep in quiet conversation in the other end of the cell.’
      • ‘The other motorists were most cooperative, and the policemen on duty were deep in conversation.’
      • ‘I pretended to be deep in conversation in the middle of a very important telephone call.’
      • ‘He acted as if she'd been deep in conversation with him, and didn't even introduce himself.’
      • ‘He looked really deep in thought and sad at the same time.’
      • ‘Still deep in easy conversation, the two finished their drinks and left the coffeehouse.’
      • ‘He kept gazing out over the calm ocean and was so deep in thought that he didn't hear Caitlin come up from behind him.’
      • ‘Shouts and periodic crashes from upstairs let him know that Meg was still deep in her game.’
      • ‘I walk away while seemingly deep in technical conversation with Tony.’
      • ‘He closed his eyes and furrowed his brow, appearing to be deep in deliberation about something.’
      • ‘They rushed up, shouting insults at the sage who was then deep in meditation.’
      • ‘Meanwhile, Derek was deep in discussion with the restaurant manager on the subject of music.’
      • ‘I had been so deep in thought that I hadn't heard her trying to get my attention.’
      • ‘An hour passed, seeming to him like a few minutes, so deep in thought he was.’
      • ‘Then he'd go off and make himself a cup of coffee still deep in thought, sometimes forgetting to add sugar and sometimes adding too much.’
      • ‘A man and a woman standing leaning up against the bar just behind where we are sitting are deep in conversation.’
      • ‘So deep in thought was he, he didn't hear the door open and close behind him.’
      rapt, absorbed, engrossed, preoccupied, immersed, steeped, lost, captivated, spellbound, riveted, gripped, enthralled, intent, engaged
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    5. 2.5 (of a person) unpredictable and secretive.
      ‘that Thomas is a deep one’
      • ‘The world was scared of him, because he was too deep, or forthright, or brave.’
      • ‘I'm a pretty deep person, and cruising gives me a chance to be alone and think.’
      • ‘I've always wanted to meet you, you seem like such a deep person with a beautiful soul.’
      • ‘As you would expect from someone who has made a living in the movie capital for more than 30 years, he is neither a subtle nor a very deep man.’
  • 3(of sound) low in pitch and full in tone; not shrill.

    ‘a deep, resonant voice’
    • ‘Everett had a very deep bass voice that sounded perpetually gloomy and mournful when a person wasn't used to him.’
    • ‘Nothing was heard or seen until and deep growl came from behind Callum.’
    • ‘Over the noise came a deep rumbling, like the engines of several bulldozers.’
    • ‘His deep voice comes from behind me, and as I turn my head, sure enough, my husband has returned to my side.’
    • ‘Then a second explosion was felt, with a deep roar and a juddering as the whole cinema shook.’
    • ‘Her voice then took on a remarkably deep tone as she stood there with a far away look in her eyes.’
    • ‘Tally froze as a deep voice sounded behind them, sounding oddly unlike the voice of Orion.’
    • ‘Lightly she tapped on the wooden door to hear the deep boom of her father's voice tell her to enter.’
    • ‘She threw back her head and laughed and laughed, a deep rumbling that seemed to come from her very soul.’
    • ‘This means that there are additional deep sounds which cannot be heard.’
    • ‘His voice was deep and throaty, resonating in his chest as though he had just woken from a very long sleep.’
    • ‘He thought he heard a rumbling sound, a deep voice coming from somewhere far away.’
    • ‘A voice spoke from behind him, a deep and rich baritone which made him jump slightly.’
    • ‘Before we had a chance to begin dancing, we were interrupted by a deep voice from behind me.’
    • ‘As Helen ran down the narrow hallway, the silence was broken by a deep booming sound.’
    • ‘Then growling deeply, he brings his face a little closer and lets out a deep roar.’
    • ‘At his urging I strummed the guitar, closing my eyes as a gorgeous deep sound resonated.’
    • ‘She slipped her arm through one strap and was about to walk away when she heard a deep chuckle from behind her.’
    • ‘Do you think it would be better to use a large bell with deep tones or a small, higher pitched bell?’
    • ‘At that moment the deep boom of the great brass bell reverberated through the monastery.’
    low-pitched, low, bass, full-toned, rich, powerful, resonant, rumbling, booming, resounding, sonorous
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  • 4(of colour) dark and intense.

    ‘a deep pink’
    • ‘Although the main stem is still thin and whippy, it is an attractive, shiny, deep purple in colour.’
    • ‘The bruise on his neck was deep purple and was easily visible even with his collar turned up.’
    • ‘They were a rather mysterious, deep blue, so much so that they nearly blended in with their pupils.’
    • ‘The dress was a similar material to the other one but this time it was deep purple.’
    • ‘This colour can range from washed-out orange and light salmon hues to vibrant day-glow and rich deep cherry pinks.’
    • ‘Colors appear natural, blacks are deep and rich with only a minor lack of shadow detail.’
    • ‘The sky had become a dark shade of indigo, tinged with the remnants of deep magenta.’
    • ‘This contrasted against his dark brown skin, jet-black hair and deep brown, yet cold eyes.’
    • ‘The night was becoming a deep shade of grey as thunder rumbled in the distance.’
    • ‘The first stars were already beginning to peek out of the deep blue, cold sky.’
    • ‘I open my eyes and there are her deep, cold, violet, malicious eyes, staring at me.’
    • ‘The rest of the head is deep blue, extending in a line through the eye, giving the birds a masked appearance.’
    • ‘Todd could feel his cheeks blushing a deep crimson red as Rachel finished his question.’
    • ‘It has a deep magenta color that contrasts well with the more dominant green and gray foliage colors of the garden.’
    • ‘She had natural black hair and deep blue eyes that shimmered in the lighting.’
    • ‘In the east the sky is deep dark blue and the stars are fewer and brighter.’
    • ‘He had short golden blonde hair and deep blue eyes behind thin framed glasses.’
    • ‘As the shingles weather to a deep grey, the house appears from a distance to disappear into the forest.’
    • ‘I sit on the ledge and watch the sun play with incandescent shadows of deep green, as red deer graze in the distance.’
    • ‘The colours are deep and rich and help set an operatic mood and tone for almost every scene.’


the deep
  • 1literary The sea.

    ‘denizens of the deep’
    • ‘He is an accomplished diver who grows flowers in an amphora he retrieved from the deep.’
    • ‘Of course if your view of fishermen is of the lone few on a trawler battling danger and the deep for a few mackerel it would be difficult to agree.’
    • ‘And that's before we even get to the more bizarre denizens of the deep.’
    • ‘He continued to take a twisted delight in showing us the scariest creatures of the deep.’
    • ‘He had been steering at the rudder when a great many large, dark shapes darted up from out of the deep.’
    • ‘At night, the phosphorescence looks as if all the constellations in the inky sky have fallen into the deep.’
    • ‘In January this year he returned to raise the body from the deep.’
    • ‘I think people are fascinated by these slimy weird monsters of the deep.’
    • ‘The discoveries have emerged from a study of whale song that is redefining what experts know about the giants of the deep.’
    • ‘The oarsmen pushed their oars above the water while a brawny man dropped an anchor into the deep.’
    • ‘A bit later they had proof of his ignorance when he told them to cast their nets in the deep during broad daylight.’
    • ‘There's also a chance of seeing blue manta, the dark, silent deltas of the deep.’
    • ‘Even under the laws of man, there is nothing clear-cut about the ownership of these creatures of the deep.’
    the sea, the ocean
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    1. 1.1usually deeps A deep part of the sea.
      ‘the dark and menacing deeps’
      figurative ‘the deeps of her imagination’
      • ‘In the deeps of the Black Sea today, hydrogen sulfide exists at about 200 parts per million.’
      • ‘Any idea what other sort of creatures could wear this sort of camera and go take pictures for you way down in the deep?’
      • ‘Throughout this day, Glen carefully returns six such animals to the deeps.’
      • ‘Scanning the area with invisible eyes, the figure finally dismissed its feelings as a mistaken judgement, before swimming on into the murky deeps off the ocean's continental shelf.’
      • ‘If they find anything in the deeps, good for them.’
      • ‘The North Sea being at the northern end of its range, it may be driven during winter to seek refuge in the few deeps which this sea offers.’
      • ‘Everywhere from the shallows of time to the deeps the ocean is one and the same water.’
      • ‘Or, if there are sea monsters out there, they may be hidden in the deeps.’
      • ‘Later, a couple swam into view, apparitions emerging from the black deeps beyond the porch lights.’
      • ‘Even if this is just a mass colony of plankton, it's still a damn fascinating example of everything we don't know about the deep.’
      • ‘The large ferox trout patrol the deeps and there are shoals of smaller trout in the deeps also.’
      • ‘Perhaps it was better that he simply fade away into the great black of the deeps.’
      • ‘Tube worms and bacteria coexist in the inky darkness of ocean deeps.’
      • ‘The deeps of the Pacific, the Atlantic, and Indian Oceans all join the circumpolar deeps of the southern oceans.’
      • ‘It is probably as scared as us, blowing out before it vanishes back into the deep.’
      • ‘We reach the sea-bed and swim with things that humans never see; strange deeps and water-angels.’
      • ‘At the last moment the dolphins turned and continued at speed towards the deep.’
  • 2Cricket
    The part of the field distant from the batsman.

    • ‘Unlike the pre-war fast bowlers he was an excellent fielder in the deep and was possessed of a wonderful throwing arm.’
    • ‘If a better catch has been taken in the deep in any form of cricket, I'm not sure that I've seen it.’
    • ‘He made 70 runs off just 68 balls before being caught in the deep.’
    • ‘He is an opening batsman or number three, a brilliant fielder in the deep and a useful legspinner and googly bowler.’
    • ‘He was also noted for his magnificent fielding in the deep.’


  • 1Far down or in; deeply.

    ‘he travelled deep into the forest’
    • ‘Sherry stared deep into his eyes like she was listening and like she cared.’
    • ‘But the love of farming runs deep in the Amish heart.’
    • ‘He then walked deeper into the darkness, looked at the empty throne, and then turned to walk out.’
    • ‘We covered our faces to shield ourselves from the nausea and traversed deep into the abyss.’
    • ‘You dance and sing along and make it look natural, but deep down inside you know that you do not belong here.’
    • ‘Then Destiny stopped walking and turned back around and walked deeper into the cave.’
    • ‘He walked up to her and stood very close, looking deep into her eyes with concern.’
    • ‘He walked deeper into the woods, following the sound of running water.’
    • ‘The peroxide, he says, wouldn't penetrate very deep beneath the surface.’
    • ‘I ran right into a net fence, flipped over and fell deep into the snow behind it!’
    • ‘I quickly cut my arm, and in my haste I accidentally cut deep, wincing as a few drops of blood fell to the floor.’
    • ‘Twigs and leaves flew to either side as they went deeper into the woods.’
    • ‘Alice started laughing and Scarlet stared deep into her eyes.’
    • ‘The bracing fresh air penetrates deep into the lungs and instill a feeling of calmness and well-being.’
    • ‘Some short trails lead to viewpoints; longer and more difficult trails penetrate deep into the forest and wilderness.’
    • ‘She often walked deep into the woods behind our house by herself, carrying a handsaw.’
    • ‘The narrator gets off a train in a deserted countryside and walks deep into the forest, where he makes camp and goes to sleep.’
    • ‘At the heart of all this is a deep-seated ambivalence about government which runs deep in the Australian psyche.’
    • ‘Her muscles clenched around his fingers and she growled deep in her throat.’
    • ‘Before this point, I had started, earlier on, to question if I actually, deep down, hated women.’
    far down, far in, deep down, way down, to a great depth
    far, a long way, a great distance, a good way
    View synonyms
    1. 1.1 (in sport) distant from the batsman or forward line of one's team.
      ‘he swung the ball in deep’
      • ‘By drifting from side to side and dropping deep he found space from which to torment the other team.’
      • ‘Ireland played very deep in the first half and that's why Cameroon looked superior to us.’
      • ‘He will have to throw deep a few times early to keep the safeties out of the box.’
      • ‘In this game Royal made the mistake of either kicking too deep or not chipping.’
      • ‘He still goes deep in a lot of counts, throws too many pitches, nibbles around.’


  • deep down

    • In one's inmost feelings, despite appearances to the contrary.

      ‘I was happy on the outside, but deep down I was devastated’
      • ‘I believe that deep down, people want to confess their mistakes.’
      • ‘Some youngsters think these stories about the past are dreadfully boring and they don't want to hear them anymore but deep down, I think, they know it's part of themselves.’
      • ‘I have to hope that deep down, some of them know what they're doing is wrong.’
      • ‘It wouldn't surprise me if we just simply drifted apart because deep down neither of us think that it's going anywhere.’
      • ‘Workers were promising to fight plans to close the plant down, while deep down admitting they were fighting a losing battle.’
      • ‘You know deep down, you do not want to do this.’
  • the deep end

    • The end of a swimming pool where the water is deepest.

      • ‘At the sound of approaching footsteps, frogs hopped into the filthy, dark water at the deep end of the swimming pool.’
      • ‘He nodded slowly and turned to swim back to the ladder at the deep end.’
      • ‘The rest of the class graduated to the deep end, while I hung around the shallows or clung to the side of the pool.’
      • ‘Others dived nimbly off the diving board into blue water of the deep end of the huge swimming pool.’
      • ‘Hang on, that's about the depth of the deep end of the local swimming baths.’
      • ‘One lifeguard was watching the remaining 30 children who had to swim qualifying laps to swim in the deep end.’
      • ‘You can't just have people diving into the deep end of the pool without showing that they can swim.’
      • ‘I had conquered my fear of drowning very early in my childhood by recklessly throwing myself into the deep end of a pool and being dragged out unconscious.’
      • ‘She walked to the deep end and touched the water with the tip of her toes before she dove in.’
      • ‘The game is played in the deep end of the pool over seven minute quarters with substitution allowed throughout the game.’
  • dig deep

    • informal Use a lot of one's physical, mental, or financial resources.

      ‘dig deep—I know you can do better’
      ‘the generous trio decided to dig deep into their own pockets’
      • ‘Generous Swindonians dug deep in their pockets and raised hundreds of pounds for the National Osteoporosis Society.’
      • ‘The World Cup newcomers then dug deep to snatch a point against all the odds as their vibrant fans celebrated.’
      • ‘They have the moves, they have the power, but do they have that mental toughness to dig deep for 80 minutes?’
      • ‘I guess I'll have to dig deep and tap those resources of grit and resilience within me.’
      • ‘She had been struggling with niggling injuries but she just goes out there and digs deep and she got her silver medal as a reward.’
      • ‘Over £700 was raised as performers sang, danced and played, and the audience dug deep for a raffle.’
      • ‘Time and again you had dug deep for one good cause after another.’
      • ‘Shoppers rose to the occasion and dug deep into their pockets.’
      • ‘Revellers dug deep, contributing to raffles and stalls to boost the appeal as much as they could.’
      • ‘The goal gave City a lift but it was to be short-lived as Town dug deep and battled back to equalise on 64 minutes.’
  • go off the deep end

    • 1informal Give way immediately to an emotional outburst, especially of anger.

      ‘now don't go off the deep end—I've thought of an idea’
      • ‘When my soon-to-be ex discovered this budding romance, he went off the deep end - ranting, raving, smashing framed wedding invitations, and shredding my underwear.’
      • ‘Some Bulgarian leaders, and its media, went off the deep end after a Bulgarian gymnastics hopeful was judged worthy of silver, but not gold.’
      • ‘I thought they'd go off the deep end but they weren't surprised at all.’
      • ‘I just went off the deep end and I said, ‘Hey, this is going too far’.’’
      • ‘He was right, she had no business going off the deep end like that in front of anyone.’
      • ‘With each word Julius increased volume, he started to go off the deep end reading me his version of the riot act.’
      • ‘I might have suggested your name at some point but that's not reason to go off the deep end at me!’
      • ‘Something about Marin was soothing, keeping him calm at times he would've normally gone off the deep end.’
      • ‘If anyone out there thinks the Globe & Mail is biased, the Calgary Herald, Calgary Sun and National Post have absolutely gone off the deep end since the election.’
      • ‘A few may go off the deep end screaming about human rights, but there are others which are both clear-eyed and clear-headed while being concerned about human rights.’
      1. 1.1US Go mad; behave extremely strangely.
        ‘they looked at me as if I had gone off the deep end’
        • ‘And pretty soon the fridge was empty and we're sitting there in the kitchen, laughing so hard about heart disease and strokes that I thought we'd both gone off the deep end.’
        • ‘It was like a two-year period when I went off the deep end and it culminated in that ludicrous mess.’
        • ‘The one thing that hadn't passed was her determination to be separated legally from her mother, who we both knew had gone off the deep end permanently and had even been trying to sell all of Victoria's belongings.’
        • ‘I don't know if she's just goofing around or if she's totally gone off the deep end.’
        • ‘As far as warning signs go, two people I knew went off the deep end during various mind expansion attempts.’
        • ‘My mother has always been crazy but she finally went off the deep end and severed ties with me and her mother who I stay with.’
        • ‘Even for a company known for reinventing itself with each new production, it seemed that Headlong Dance Theater had finally gone off the deep end when its new production was announced.’
        • ‘They glanced at each other like she had gone off the deep end, but Ashley obeyed and retrieved her cordless phone from the kitchen.’
        • ‘Toddlers are also creatures of habit, which in the end is perhaps the only thing that saves a parent from going off the deep end.’
        • ‘How should the rest of us regard a once-formidable mind after it has gone off the deep end?’
  • go (or run) deep

    • (of emotions, beliefs, etc.) be strongly and wholeheartedly felt or held.

      ‘his passion runs deep’
      • ‘I know that Dad's mental scars run deeper.’
      • ‘The most simple, effortless view, the view that fails to go deep enough to stir any real thought.’
      • ‘His allegiance to the cause runs deep.’
      • ‘Loyalty to a sibling ran deeper than loyalty to a spouse.’
      • ‘My objective was to get people or somebody in authority to go deeper than the reasons that I really gave.’
      • ‘Running deeper than any political beliefs, too, is the deeply American conviction that bloodshed can be cleansing.’
      • ‘Martin felt that Wills ' motives went deeper than just Paciorek.’
      • ‘But poverty is high, drug use is common and resentments run deep.’
      • ‘Even after years of marriage and familiarity, the love was strong, the respect running deep.’
      • ‘I DO understand that racist attitudes TEND to run deep.’
  • in deep

    • Inextricably involved in or committed to a situation.

      ‘he knew that he was in deep when his things began to proliferate in her apartment’
      • ‘The shooting began to sink in and he realised he was in deep, way over his head.’
      • ‘Four likely London lads are in deep to a mobster and try to find ways to come up with the dosh.’
      • ‘Besides, Calvin was way in deep with Carol Carmicheal, some senior at the other private school in town.’
      • ‘He got himself in deep over his head and now he could spend the rest of his life in jail.’
      • ‘You're in deep in the system, in its fouled blood, in its creaking bones, in its edgy nerves.’
  • in deep water (or waters)

    • informal In trouble or difficulty.

      ‘he landed in deep water when he began the affair’
      • ‘If it's anything like the outcome of tonight's final episode, then, fellow viewers, we are in deep water.’
      • ‘It is evident the administration is in deep water.’
      • ‘Both teams are still in deep water at the bottom of the table.’
      • ‘I'm already in deep water with readers after last week's cruel column in which I described how I plucked and ‘dressed’ a pheasant which was already dead when it came into my possession.’
      • ‘How many times have we found our selves in deep water over small and not so small issues?’
      • ‘I've been in deep water and he hasn't been in deep water and we'll see how he handles that.’
      • ‘But when I get in deep water, I prefer to announce that I'm in over my head.’
      • ‘Many Christians only think of God when they are in deep water, they get in trouble and they scream for God, they get out of trouble, and they run back to their sin and rebellion.’
      • ‘With his manipulative talents, he landed his opponent in deep waters.’
      • ‘With journal entries, though, I may find myself in deep water.’
  • jump (or be thrown) in at the deep end

    • informal Face a difficult problem or undertaking with little or no preparation or prior experience.

      ‘they're thrown in at the deep end and have to develop skills quickly’
      • ‘He was thrown in at the deep end, expected to live at the residential centre he worked at along with the users who were his clients.’
      • ‘I was thrown in at the deep end and they put me on the Finance Committee.’
      • ‘I was thrown in at the deep end, I had no inclination of what was going to happen.’
      • ‘She's obviously a planner, rather than an activist like me who jumps in at the deep end.’
      • ‘In the past we've had good ideas and jumped in at the deep end.’
      • ‘With his first assignment, Weston was thrown in at the deep end.’
      • ‘A lot of players were thrown in at the deep end, me being one of them.’
      • ‘On her first job she was thrown in at the deep end when she was sent on a business trip to Northern Ireland.’
      • ‘We were thrown in at the deep end when we won a major global project with a London bank and we needed to get moving quickly.’
      • ‘I was thrown in at the deep end and I had to learn everything on my feet - it turned out very well indeed.’


Old English dēop (adjective), dīope, dēope (adverb), of Germanic origin; related to Dutch diep and German tief, also to dip.