1. [Adjective]: 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"; "a deep casserole"; "a deep gash"; "deep m

2. [Adjective]: relatively deep or strong; affecting one deeply; "a deep breath"; "a deep sigh"; "deep concentration"; "deep emotion"; "a deep trance"; "in a deep sleep"

3. [Noun]: literary term for an ocean; "denizens of the deep"

4. [Noun]: the central and most intense or profound part; "in the deep of night"; "in the deep of winter"

5. [Noun]: a long steep-sided depression in the ocean floor

6. [Adverb]: to far into space; "penetrated deep into enemy territory"; "went deep into the woods";

7. [Adverb]: to a great depth; "dived deeply"; "dug deep"

8. [Adverb]: to an advanced time; "deep into the night"; "talked late into the evening"

9. extreme; "in deep trouble"; "deep happiness"

10. marked by depth of thinking; "deep thoughts"; "a deep allegory"

11. extending relatively far inward; "a deep border"

12. strong; intense; "deep purple"; "a rich red"

13. difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge; "the professor''s lectures were so abstruse that students tended to avoid them"; "a deep metaphysical theory"; "some recondite problem in historiography"

14. with head or back bent low; "a deep bow"

15. large in quantity or size; "deep cuts in the budget"

16. (of darkness) very intense; "thick night"; "thick darkness"; "a face in deep shadow"; "deep night"

17. relatively thick from top to bottom; "deep carpets"; "deep snow"

18. exhibiting great cunning usually with secrecy; "deep political machinations"; "a deep plot"

19. very distant in time or space; "deep in the past"; "deep in enemy territory"; "deep in the woods"; "a deep space probe"

20. of an obscure nature; "the new insurance policy is written without cryptic or mysterious terms"; "a deep dark secret"; "the inscrutible workings of Providence"; "in its mysterious past it encompasses all the dim origins of life"- Rachel Carson; "rituals t

21. having or denoting a low vocal or instrumental range; "a deep voice"; "a bass voice is lower than a baritone voice"; "a bass clarinet"

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