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.

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

Sometimes, one sibling feels entitled to more and will use nefarious means to get it.

From MarketWatch • Feb. 2, 2026

The implication is that, in addition to engaging in nefarious financial shenanigans, one of Mr. Xi’s most trusted henchmen was plotting against him.

From The Wall Street Journal • Jan. 26, 2026

Doug Swieteck’s brother, wouldn’t even come near me, and I would foil Mrs. Baker’s nefarious plan.

From "The Wednesday Wars" by Gary D. Schmidt