DEEP definition and meaning | Collins English Dictionary If something is deep, it extends a long way down from the ground or from the top surface of something The water is very deep and mysterious-looking Den had dug a deep hole in the centre of the garden
Deep - definition of deep by The Free Dictionary deep - 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"
What does DEEP mean? - Definitions. net Profound, having great meaning or import, but possibly obscure or not obvious That is a deep thought! To a significant, not superficial, extent In extent in a direction away from the observer The shelves are 30cm deep Thick Voluminous Low in pitch Dark and highly saturated A long way inside; situated far in or back