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View synonyms for deep

deep

[ deep ]

adjective

, deep·er, deep·est.
  1. extending far down from the top or surface:

    a deep well;

    a deep valley.

    Antonyms: shallow

  2. extending far in or back from the front or from an edge, surface, opening, etc., considered as the front:

    a deep shelf.

  3. extending far in width; broad:

    deep lace;

    a deep border.

  4. ranging far from the earth and sun:

    a deep space probe.

  5. having a specified dimension in depth:

    a tank 8 feet deep.

  6. covered or immersed to a specified depth (often used in combination):

    standing knee-deep in water.

  7. having a specified width or number of items from front to back (often used in combination):

    shelves that are 10 inches deep;

    cars lined up at the entrance gates three-deep.

  8. extending or cutting far down relative to the surface of a given object:

    The knife made a deep scar in the table.

  9. situated far down, in, or back:

    deep below the surface;

    deep in the woods.

  10. reaching or advancing far down:

    a deep dive.

    Antonyms: shallow

  11. coming from far down:

    a deep breath.

  12. made with the body bent or lowered to a considerable degree:

    a deep bow.

  13. immersed or submerged in or heavily covered with (followed by in ):

    a road deep in mud.

  14. difficult to penetrate or understand; abstruse:

    a deep allegory.

    Synonyms: obscure, mysterious, recondite

  15. not superficial; profound:

    deep thoughts.

  16. grave or serious:

    deep disgrace.

  17. deep affections.

  18. deep study.

  19. great in measure; intense; extreme:

    deep sorrow.

  20. sound and heavy:

    deep sleep.

  21. (of colors) dark and vivid:

    a deep red.

  22. low in pitch, as sound, a voice, or the like:

    deep, sonorous tones.

  23. having penetrating intellectual powers:

    a deep scholar.

    Synonyms: shrewd, intelligent, wise, sagacious

  24. profoundly cunning or artful:

    a deep and crafty scheme.

  25. deep, dark secrets.

  26. immersed or involved; enveloped:

    a man deep in debt.

  27. deep in thought.

  28. Baseball. relatively far from home plate:

    He hit the ball into deep center field.

  29. Linguistics. belonging to an early stage in the transformational derivation of a sentence; belonging to the deep structure.


noun

  1. the deep part of a body of water, especially an area of the ocean floor having a depth greater than 18,000 feet (5,400 meters).
  2. a vast extent, as of space or time.
  3. the part of greatest intensity, as of winter.
  4. Nautical. any of the unmarked levels, one fathom apart, on a deep-sea lead line. Compare mark 1( def 20 ).
  5. the deep, Chiefly Literary. the sea or ocean:

    He was laid to rest in the deep.

adverb

, deep·er, deep·est.
  1. to or at a considerable or specified depth:

    The boat rode deep in the water.

  2. far on in time:

    He claimed he could see deep into the future.

  3. Baseball. at or to a deep place or position:

    The outfielders played deep, knowing the batter's reputation as a slugger.

deep

/ diːp /

adjective

  1. extending or situated relatively far down from a surface

    a deep pool

  2. extending or situated relatively far inwards, backwards, or sideways

    a deep border of trees

  3. cricket relatively far from the pitch

    the deep field

    deep third man

    1. postpositive of a specified dimension downwards, inwards, or backwards

      six feet deep

    2. ( in combination )

      a six-foot-deep trench

  4. coming from or penetrating to a great depth

    a deep breath

  5. difficult to understand or penetrate; abstruse
  6. learned or intellectually demanding

    a deep discussion

  7. of great intensity; extreme

    deep trouble

    deep happiness

  8. postpositivefoll byin absorbed or enveloped (by); engrossed or immersed (in)

    deep in debt

    deep in study

  9. very cunning or crafty; devious

    a deep plot

  10. mysterious or obscure

    a deep secret

  11. (of a colour) having an intense or dark hue
  12. low in pitch or tone

    a deep voice

  13. go off the deep end informal.
    go off the deep end
    1. to lose one's temper; react angrily
    2. to act rashly
  14. in deep water
    in deep water in a tricky position or in trouble
  15. See end
    throw someone in at the deep end
    throw someone in at the deep end See end 1


noun

  1. any deep place on land or under water, esp below 6000 metres (3000 fathoms)
  2. the deep
    the deep
    1. a poetic term for the ocean
    2. cricket the area of the field relatively far from the pitch
  3. the most profound, intense, or central part

    the deep of winter

  4. a vast extent, as of space or time
  5. nautical one of the intervals on a sounding lead, one fathom apart

adverb

  1. far on in time; late

    they worked deep into the night

  2. profoundly or intensely
  3. deep down informal.
    deep down in reality, esp as opposed to appearance

    she is a very kind person deep down

  4. deep in the past
    deep in the past long ago

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Derived Forms

  • ˈdeeply, adverb
  • ˈdeepness, noun

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Other Words From

  • deep·ness noun
  • non·deep adjective
  • o·ver·deep adjective
  • un·deep adjective
  • un·deep·ly adverb

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Word History and Origins

Origin of deep1

First recorded before 900; Middle English dep, Old English dēop; akin to Gothic diups, Old Norse djupr, Dutch diep, Old High German tiof; akin to dip 1( def ), dive ( def )

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Word History and Origins

Origin of deep1

Old English dēop; related to Old High German tiof deep, Old Norse djupr

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Idioms and Phrases

Idioms
  1. go off the deep end,
    1. to enter upon a course of action with heedless or irresponsible indifference to consequences.
    2. to become emotionally overwrought.
  2. in deep water,
    1. in difficult or serious circumstances; in trouble.
    2. in a situation beyond the range of one's capability or skill:

      You're a good student, but you'll be in deep water in medical school.

  3. in deep,
    1. inextricably involved.
    2. having made or committed oneself to make a large financial investment.

More idioms and phrases containing deep

  • beauty is only skin deep
  • between a rock and a hard place (devil and deep blue sea)
  • go off the deep end
  • in deep
  • still waters run deep

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Example Sentences

Ogalo, who hosts the podcast “In Your Twentys,” wasn’t used to having deep conversations on Tinder.

It goes a long way, and I wanted to say thank you from the deepest of my heart.

These specialists are the link between deep knowledge of Schneider Electric’s audiences and account optimization.

I do have actual friends, and I find that I would rather spend my limited free time having real conversations with them about our deeper and more private feelings.

Both players had plenty of good looks, hitting three shots from deep apiece.

Deep, situational, and emotional jokes based on what is relevant and has a POINT!

The lascivious sex predator is out; the deep-pocketed caped crusader is most definitely in.

Fumbleroooohski…'” (39) “'Look at me, ungh, splitting my own seam, oohh… going deep.

There was deep brown flesh, and bronze flesh, and pallid white flesh, and flesh turned red from the hot sun.

As he drove me back to the logging road, Frank told me about the area in his deep voice.

He remembered something—the cherished pose of being a man plunged fathoms-deep in business.

At present, Louis was too self-absorbed by the struggles within him, to look deep into what was passing around him.

It succeeds best in a deep rich loam in a climate ranging from forty to fifty degrees of latitude.

And then what could be more deep and poetic than Liszt's transcriptions of Schubert's and Wagner's songs?

The next moment a pistol was fired at their head, and a deep groan shewed it had taken too true an aim.

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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