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.
has warned
-
present perfectof warn (3rd person singular).present perfect
Used to describe actions that started in the past and continue into or have direct relevance to the present.
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.
Amodei himself has warned that AI could pose a risk to humanity if developed badly.
From Salon ● Sep. 29, 2026
The chancellor has warned against allowing Britain's benefits bill to balloon while not offering young people opportunities.
From BBC ● Sep. 28, 2026
Vysotskyi, the food minister, has warned that the reorganisation of logistics could increase the cost of foodstuffs by up to 2.5 percent, while Ukraine's central bank said annual inflation stood at 8.1 percent in August.
From Barron's ● Sep. 27, 2026
In recent days, Krinsky has warned clients about what he sees as a growing triple threat: weak stock-market breadth, rising credit spreads and rising nominal Treasury yields.
From MarketWatch ● Sep. 23, 2026
With all of the health hazards and ailments that Gran has warned me about, why did she not explain that heartsickness might just be the worst of all?
From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin
