nefarious

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.

Here, siblings Mario and Luigi team with Princess Peach and Toad on an interstellar adventure and face off against the nefarious fire-breathing Bowser and his son.

From The Wall Street Journal • Mar. 29, 2026

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

Words like: viscous, impunity, paroxysm, unctuous, nefarious, onanistic, perfidious, lugubrious.

From "Hole in My Life" by Jack Gantos