deepen

verb

deep·​en ˈdē-pən How to pronounce deepen (audio)
deepened; deepening ˈdē-pə-niŋ How to pronounce deepen (audio)
ˈdēp-niŋ
Synonyms of deepennext

transitive verb

: to make deep or deeper

intransitive verb

: to become deeper or more profound

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.
Recent Examples on the Web
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Parents and advocates warn that fragmented oversight will deepen inequities for students with disabilities nationwide. Heather Hollingsworth, Los Angeles Times, 30 June 2026 These innovations, built on a modernized digital platform and improved data architecture, aim to deepen engagement for global audiences. Tim Newcomb, Forbes.com, 29 June 2026 As the crisis deepens, the United Nations has taken a central role in coordinating the international rescue effort in collaboration with the Rodríguez government. Antonio María Delgado, Miami Herald, 29 June 2026 The same forces that built fortunes also deepened inequality, accelerated environmental damage and led to violence and exclusion that reshaped entire communities. Andre Byik, USA Today, 29 June 2026 See All Example Sentences for deepen

Word History

First Known Use

1600, in the meaning defined at transitive sense

Time Traveler
The first known use of deepen was in 1600

Browse Nearby Words

Cite this Entry

“Deepen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deepen. Accessed 3 Jul. 2026.

Kids Definition

deepen

verb
deep·​en ˈdē-pən How to pronounce deepen (audio)
deepened; deepening ˈdēp-(ə-)niŋ How to pronounce deepen (audio)
: to make or become deep or deeper

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