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Definitions

deleterious

[del-i-teer-ee-uhs] / ˌdɛl ɪˈtɪər i əs /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

When they met in Munich last month, California Gov. Gavin Newsom sought his views on curbing the addictive and deleterious effects of social media on children.

From The Wall Street Journal • Mar. 27, 2026

If one deteriorates, the other is almost certain to do so as well, with deleterious consequences.

From Barron's • Mar. 7, 2026

"Those beneficial mutations in the old environment might become deleterious in the new environment."

From Science Daily • Dec. 24, 2025

Directors, producers and owners of theater chains fear that Netflix’s WBD takeover can only be further deleterious to the box office ecosystem.

From Salon • Dec. 10, 2025

Terryl was doing a command performance for her debate team, arguing about the deleterious impact of violence in advertising.

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel