deep

adjective

1
exhibiting great cunning usually with secrecy
deep political machinations
a deep plot
2
strong; intense
deep purple
a rich red
3
very distant in time or space
deep in the past
deep in enemy territory
4
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
5
relatively deep or strong; affecting one deeply
a deep breath
a deep sigh
6
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
7
of an obscure nature
the new insurance policy is written without cryptic or mysterious terms
a deep dark secret
8
with head or back bent low
a deep bow
9
having or denoting a low vocal or instrumental range
a deep voice
a bass voice is lower than a baritone voice

1
literary term for an ocean
denizens of the deep
2
a long steep-sided depression in the ocean floor
3
the central and most intense or profound part
in the deep of night
in the deep of winter

Also useful for “deep”:Unscrambler— Turn loose letters into real words