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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.

What frightens scientists more than the sheer numbers are that the cuts are arbitrary and manifestly pernicious.

From Los Angeles Times • Jun. 11, 2026

“But when things are mostly right but sometimes wrong, that’s the most pernicious one.”

From The Wall Street Journal • Apr. 14, 2026

But there are also much more pernicious problems.

From Slate • Mar. 1, 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

Every day since then on the radio we heard about the need to end the evil and pernicious influences of the “Four Olds”: old ideas, old culture, old customs, and old habits.

From "Red Scarf Girl: A Memoir of the Cultural Revolution" by Ji-li Jiang




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