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.
The morning of June 6, Mellor was back at Boston Logan airport for another trip to Havana, at a time when the United States is trying to tighten economic strings to choke Cuba’s government into change, and the country faces a deepening humanitarian catastrophe. Nick Penzenstadler, USA Today, 6 June 2026 Nvidia is looking to deepen its ties with South Korea as tech supply chains come into focus given the Iran war, and as the company faces rising regulatory hurdles in selling to the mainland Chinese market. Justina Lee,lisa Kim, CNBC, 5 June 2026 The incident has deepened concerns about the safety of Nepali workers on the mountain, which has seen an explosion of commercial guiding outfitters in recent years. Helen Regan, CNN Money, 5 June 2026 Even as the brand continues to deepen its relationships with Hollywood creatives and red carpet talent — from Jeff Goldblum to stylist George Cortina — Mage insists the company’s cultural relevance has grown organically. Thomas Waller, Footwear News, 4 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 7 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