deep·​en | \ ˈdē-pən How to pronounce deepen (audio) \
deepened; deepening\ ˈdē-​pə-​niŋ How to pronounce deepening (audio) , ˈdēp-​niŋ \

Definition of deepen

transitive verb

: to make deep or deeper

intransitive verb

: to become deeper or more profound

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Examples of deepen in a Sentence

They deepened the river so that larger boats could sail through. Age had deepened the lines in his face. The water deepens toward the center of the river. Her powerful words deepened our commitment to the cause. The vacation together deepened their relationship with each other. The mystery was deepened by her silence. This class will deepen your understanding of economics. Living in the country's capital had deepened her knowledge of politics.
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Recent Examples on the Web

As the humanitarian crisis deepens, political analysts and activists say Mr. Maduro has increasingly used food handouts as a powerful political tool over impoverished residents. Ryan Dube, WSJ, "U.S. Sanctions Venezuela’s Oil Chief, Says Food Aid Will Be Flown to Border," 15 Feb. 2019 As the night deepens, stars, sea, and the light spill of Honduras far to the south conspire to set the searcher, the visitor, dreaming. Horatio Clare, Condé Nast Traveler, "Why You Should Go to Belize Now," 21 Dec. 2018 The mystery deepens when viewing the contraband catalogues. Stellene Volandes, Town & Country, "Inside the Enduring Mystery of What Happened to Russia's Imperial Jewelry," 1 Nov. 2018 The quarterback pool deepens every year, with players like Alex Smith and Prescott ranked outside the top 20 by ADP. Michael Beller,, "Tips to Help You Ace Any Fantasy Football Draft," 4 July 2018 The story just deepens and becomes all the more fascinating. Erin Zimmerman, The Cut, "The Identity Transformation of Becoming a Mom," 25 May 2018 The Science article deepens an uproar that has been going on at the Salk’s La Jolla campus since last summer when three of the institute’s female professors separately sued the center for alleged gender discrimination. Gary Robbins,, "Eight women say they were sexually harassed by Salk researcher Inder Verma," 1 May 2018 The move deepens the partnership between the companies, which already entails spaces within Best Buy’s enormous fleet of stores to showcase smart home items made by Amazon. Phil Wahba, Fortune, "Best Buy and Amazon Put Their Rivalry Aside Again to Sell More TVs," 18 Apr. 2018 So as King grows from a man terrified by death and failure into one who understands his place in the world, Hazleton deepens and intensifies his performance. Lawrence Toppman, charlotteobserver, "A timely visit to ‘The Mountaintop’ has special resonance | Charlotte Observer," 17 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'deepen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of deepen

1598, in the meaning defined at transitive sense

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Statistics for deepen

Last Updated

11 Mar 2019

Look-up Popularity

Time Traveler for deepen

The first known use of deepen was in 1598

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More Definitions for deepen



English Language Learners Definition of deepen

: to become or to cause (something) to become deep or deeper
: to become or to cause (something, such as a feeling or emotion) to become stronger or more powerful
: to make (your knowledge, understanding, etc.) fuller or more complete


deep·​en | \ ˈdē-pən How to pronounce deepen (audio) \
deepened; deepening

Kids Definition of deepen

: to make or become deep or deeper I deepened the hole.

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More from Merriam-Webster on deepen

Rhyming Dictionary: Words that rhyme with deepen

Thesaurus: All synonyms and antonyms for deepen

Spanish Central: Translation of deepen

Nglish: Translation of deepen for Spanish Speakers

Britannica English: Translation of deepen for Arabic Speakers

Comments on deepen

What made you want to look up deepen? Please tell us where you read or heard it (including the quote, if possible).


to corrupt or become corrupted

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