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English definition of “deep”

deep

adjective, adverb [-er/-est only] (DOWN)   /dip/
going or being a long way down from the top or surface, or being at a particular distance down from the top: She had a deep cut on her left arm. During the flood, the water in the basement was knee-deep (= it would reach the knees of an average adult).
(Definition of deep adjective, adverb (DOWN) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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