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English definition of “deep”

deep

adjective (LONG WAY DOWN)    /diːp/
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 5 cm 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.High, tall and deep Grammar:MeasurementsGrammar:Area: length, width, depth and heightWe use the nouns length, width, depth and height and the adjectives long, wide, deep and high to talk about area and size:Grammar:Weight and volumeWe use the verb weigh to measure weight:Grammar:Frequency, speed, timeWe use many different expressions to describe frequency, speed and time. Here are some of them:
(Definition of deep adjective (LONG WAY DOWN) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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