deep - definition in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online (US)

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English definition of “deep”

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deep

adjective uk   us   /diːp/

deep adjective (LONG WAY DOWN)

A2 going or being a long way down from the top or surface, or being of a particular distance from the top to the bottom: a deep well/mine a deep river/sea a deep cut The hole is so deep you can't see the bottom. The water's not deep here - look, I can touch the bottom. Drill 20 holes, each 2 inches deep. The water's only ankle/knee/waist-deep, so we'll be able to get across the river easily. Take a few deep breaths (= breaths that fill the lungs with air) and calm down.
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deep adjective (STRONGLY FELT)

B2 very strongly felt or experienced and usually lasting a long time: Their son has been a deep disappointment to them. We're in deep trouble. She fell into a deep sleep.
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deep adjective (LOW)

B2 (of a sound) low: a wonderfully deep voice
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deep adjective (COMPLICATED)

C2 showing or needing serious thought, or not easy to understand: His films are generally too deep for me.
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deep adjective (FRONT TO BACK)

B2 If something is deep, it has a large distance between its edges, especially between its front and back edges: Is the alcove deep enough for bookshelves? The wardrobe is 2 m high, 1 m wide and 60 cm deep. By midnight, there were customers standing six deep (= in six rows) at the bar.deep in/inside/within sth B1 near the middle of something, and a long distance from its edges: Little Red Riding Hood's grandmother lived in a house deep in the forest.

deep adjective (DARK)

B1 (of a colour) strong and dark: The sky was deep blue.

deep

deep

(Definition of deep from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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