warn
verb (used with object)
to give notice, advice, or intimation to (a person, group, etc.) of danger, impending evil, possible harm, or anything else unfavorable.
warned
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past participleof warn.past participle
A verb form used in perfect and passive verb constructions and that can also function as a modifier.
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past tense formof warn.past tense
Used to describe completed actions or previous habitual actions.
warnverb (used with object)to give notice, advice, or intimation to (a person, group, etc.) of danger, impending evil, possible harm, or anything else unfavorable.
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.
Dr Nas Khattak, a research doctor based in Chester who has worked on clinical trials of weight-loss drugs, warned of the dangers of injections obtained through unregulated sources.
From BBC ● Nov. 14, 2026
"Autonomy will very quickly become a reality on the battlefield," warned rear admiral Sebastien.
From Barron's ● Nov. 14, 2026
Since then, some units in high-risk areas have instituted turn-in and lock-away procedures, and stationed personnel have been warned to expect device confiscations.
From Los Angeles Times ● Nov. 14, 2026
To introduce an element of pressure, researchers warned half the participants that failing to follow the smiling instructions could cost them $2 from their $6 payment.
From Science Daily ● Nov. 14, 2026
“Whether started deliberately or accidentally, global war would leave civilization in a shambles,” Eisenhower warned the nation.
From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin
