| deep | (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 | - |
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| (adjective) relatively deep or strong; affecting one deeply | - |
| (adjective) exhibiting great cunning usually with secrecy | - |
| (adjective) strong; intense | Synonyms: rich |
| (adjective) very distant in time or space | - |
| (adjective) difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge | Synonyms: abstruse, recondite |
| (adjective) of an obscure nature | Synonyms: cryptic, cryptical, inscrutable, mysterious, mystifying |
| (adjective) intense or extreme | - |
| (adjective) large in quantity or size | - |
| (adjective) with head or back bent low | - |
| (adjective) having or denoting a low vocal or instrumental range | Synonyms: bass |
| (adjective) marked by depth of thinking | - |
| (adjective) relatively thick from top to bottom | - |
| (adjective) extending relatively far inward | - |
| (adjective) (of darkness) densely dark | Synonyms: thick |
| (noun) a long steep-sided depression in the ocean floor | Synonyms: oceanic abyss, trench |
| (noun) literary term for an ocean | - |
| (noun) the central and most intense or profound part | - |
| (adverb) to a great depth; far down or in | Synonyms: deeply |
| (adverb) to an advanced time | Synonyms: late |
| (adverb) to a great distance | - |