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.
That silence has only deepened scrutiny. Antonio María Delgado, Miami Herald, 27 Mar. 2026 Thousands of Shahed drones have pummeled the Persian Gulf this month, hitting hotels, airports, seaports, desalination plants, and energy infrastructure, and deepening the worst oil-price shock in modern history. Simon Shuster, The Atlantic, 27 Mar. 2026 Potential retaliatory attacks on oil and gas sites in the region also threaten to deepen and prolong a global oil crisis, driving up fuel costs and raising prices for essential goods worldwide, some analysts said. Max Zahn, ABC News, 27 Mar. 2026 Meanwhile, the speaker of the Iranian parliament cautioned the United States against putting troops on the ground, and the energy crisis unleashed by the war deepens. Ivana Kottasová, CNN Money, 27 Mar. 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 Apr. 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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