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.
These are the services that reduce harm and support reintegration, unlike arrests that only deepen instability. Shianne Leclaire, Hartford Courant, 17 May 2026 Relations between China and Russia have deepened in recent years, particularly since the start of Russia’s full-scale invasion of Ukraine in early 2022 left Moscow shunned on the global stage and heavily reliant on Beijing for trade due to Western sanctions. ABC News, 16 May 2026 Relations between China and Russia have deepened in recent years, particularly since the start of Russia's full-scale invasion of Ukraine in early 2022 left Moscow shunned on the global stage and heavily reliant on Beijing for trade due to Western sanctions. CBS News, 16 May 2026 In March, Canada and the five Nordic countries — Denmark, Finland, Iceland, Norway and Sweden — agreed to deepen their cooperation in military procurement and ramp up defense production to deal with security threats, including cyberattacks. Reuters, NBC news, 16 May 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

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Cite this Entry

“Deepen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deepen. Accessed 18 May. 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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