deepen

[ dee-puhn ]
/ ˈdi pən /

verb (used with or without object)

to make or become deep or deeper: Larger ships will be able to navigate the river after the main channel is deepened. The shadows deepened toward late afternoon.
Meteorology. to decrease in atmospheric pressure: a deepening cyclone.

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Origin of deepen

First recorded in 1595–1605; deep + -en1

OTHER WORDS FROM deepen

deep·en·er, noundeep·en·ing·ly, adverbo·ver·deep·en, verb (used with object)un·deep·ened, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for deepen

British Dictionary definitions for deepen

deepen
/ (ˈdiːpən) /

verb

to make or become deep, deeper, or more intense

Derived forms of deepen

deepener, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012