Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “deepen”


verb [I or T] (DOWN)    /ˈdiː.pən/
to make something deeper , or to become deeper : One way of preventing further flooding would be to deepen the river bed . The sea bed deepens here to 5,000 metres .Enlarging and inflatingBecoming bigger
(Definition of deepen verb (DOWN) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of deepen

Definitions of “deepen” in other dictionaries

Word of the Day


a good knowledge of something, or the fact that you know it so well

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More