(noun, adjective, adverb)


1. relatively deep or strong; affecting one deeply

- a deep breath

- a deep sigh

- deep concentration

Similar word(s): heavy, profound, sound, wakeless

2. marked by depth of thinking

- deep thoughts

- a deep allegory

Similar word(s): profound

3. having great spatial extension or penetration downward or inward from an outer surface or backward or laterally or outward from a center; sometimes used in combination

- a deep well

- a deep dive

- deep water

Similar word(s): abysmal, abyssal, unfathomable, bottomless, profound, unfathomed, unplumbed, unsounded, unfathomable

4. very distant in time or space

- deep in the past

- deep in enemy territory

- deep in the woods

Similar word(s): distant

5. intense or extreme

- in deep trouble

- deep happiness

Similar word(s): intense

6. having or denoting a low vocal or instrumental range

- a deep voice

Similar word(s): low, bass

7. strong; intense

- deep purple

Similar word(s): colorful, colourful, rich

8. relatively thick from top to bottom

- deep carpets

- deep snow

Similar word(s): thick

9. extending relatively far inward

- a deep border

Similar word(s): broad, wide

10. (of darkness) densely dark

- a face in deep shadow

- deep night

Similar word(s): intense, thick

11. large in quantity or size

- deep cuts in the budget

Similar word(s): big, large

12. with head or back bent low

- a deep bow

Similar word(s): low

13. of an obscure nature

- a deep dark secret

Similar word(s): incomprehensible, inexplicable, cryptic, cryptical, inscrutable, mysterious, mystifying

14. difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge

- a deep metaphysical theory

Similar word(s): esoteric, abstruse, recondite

15. exhibiting great cunning usually with secrecy

- deep political machinations

- a deep plot

Similar word(s): artful

Sentences with deep as an adjective:

- We hiked into a deep valley between tall mountains.

- There was a deep layer of dust on the floor; the room had not been disturbed for many years.

- The shelves are 30 centimetres deep. — They are deep shelves.

- a crowd three deep along the funeral procession

- That cyclist's deep chest allows him to draw more air.

- to take a deep breath / sigh / drink

- deep into the forest;  deep in the forest

- He is fielding at deep mid wicket.

- She hit a ball into deep center field.

- a deep volley

- That is a deep thought!

- I just meant to help out a little, but now I'm deep into it.

- They're deep in discussion.

- a deep subject or plot

- She has a very deep contralto voice.

- That's a very deep shade of blue.

- He was in a deep sleep.

- deep in debt;  deep in the mud;  waist-deep in the muddy water


1. to a great depth; far down or in

- dived deeply

- dug deep

Similar word(s): deeply

2. to an advanced time

- deep into the night

Similar word(s): late

3. to a great distance

- penetrated deep into enemy territory

- went deep into the woods


1. the central and most intense or profound part

- in the deep of night

- in the deep of winter

Definition categories: time, middle

2. a long steep-sided depression in the ocean floor

Similar word(s): trench

Definition categories: object, depression

3. literary term for an ocean

- denizens of the deep

Definition categories: object, ocean

Sentences with deep as a noun:

- creatures of the deep

- Russell is a safe pair of hands in the deep.