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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Starmer has vowed to fight any leadership contest, deepening the sense of crisis within the Labour Party. Issy Ronald, CNN Money, 20 June 2026 In the years following 2020, cities nationwide experienced alarming increases in homicides, shootings and other crime as the COVID-19 pandemic upended daily life, destabilized local economies and deepened distrust in public institutions. Diane Goldstein, Mercury News, 19 June 2026 Without a pipeline of physicians rooted in these communities, shortages persist and deepen. Jocelyn Mitchell-Williams, STAT, 19 June 2026 Both companies envision a long-term venture with future seasonal drops, aiming to introduce Hollister to new customers and deepen engagement with existing ones. Mark Faithfull, Forbes.com, 19 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 22 Jun. 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

More from Merriam-Webster on deepen

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster