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 massage
deep pressure receptors in muscles
deep shelves
a deep closet
surrounded by a deep yard
hit the ball to deep center field
in deep space
waist-deep
very distant in time or space
deep in the past
deep in enemy territory
deep in the woods
a deep space probe
extreme
in deep trouble
deep happiness
having or denoting a low vocal or instrumental range