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Definitions

pernicious

[per-nish-uhs] / pərˈnɪʃ 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.

Dahlia Lithwick: Election law expert Rick Hasen just described this as “one of the most pernicious and damaging Supreme Court decisions of the past century.”

From Slate • Apr. 30, 2026

The feisty heroine is Iris Hawkins, who, in the course of a tentative love affair with a nerdy engineer named Geoffrey Hale, discovers the pernicious designs of a secret order.

From The Wall Street Journal • Mar. 5, 2026

High borrowing costs, he said, have had a pernicious impact on lower-income consumers without producing clear gains in inflation.

From Barron's • Jan. 26, 2026

The five-year bout of high inflation is part of the pernicious legacy of the coronavirus pandemic that began in 2020.

From MarketWatch • Jan. 23, 2026

The reasoning behind the rule is not pernicious: the lawmakers presumed that a prison visit would negatively affect the sensitive psyches of children.

From "Long Walk to Freedom" by Nelson Mandela




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