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Definitions

nefarious

[ni-fair-ee-uhs] / nɪˈfɛər 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.

Let him know that there’s a chance this is a romance scam/honey trap and that even the smartest people get hoodwinked by nefarious characters who take advantage of their loneliness.

From MarketWatch • Mar. 23, 2026

But agents have to be given powerful permissions to do their jobs, and we are already seeing this being exploited in potentially nefarious ways in what are called prompt injection attacks.

From Barron's • Feb. 17, 2026

A nefarious hacker could have easily installed a virus on to my machine without me having to do anything.

From BBC • Feb. 12, 2026

Siegal told the Journal that she was unaware of Epstein’s nefarious behavior.

From The Wall Street Journal • Feb. 4, 2026

“So you’re not actually this sweet girl who lives in the suburbs. You have a whole double life where you’re carrying on in a nefarious way...”

From "Love, Hate & Other Filters" by Samira Ahmed