WARN Synonyms: 26 Similar and Opposite Words

warn

verb

ˈwȯrn

Definition of warn

as in to alert

to give notice to beforehand especially of danger or risk the lifeguard warned the boys that if they continued playing so rough, someone was sure to get hurt

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

risk
imperil

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of warn These poems used images from ordinary life to warn against greed, religious hypocrisy and an excessive attachment to worldly possessions. — Peter Dziedzic, The Conversation, 30 July 2026 Though board members approved Charlotte Secondary’s proposal, some warned the school needs to double down on improving its state test scores. — Rebecca Noel, Charlotte Observer, 30 July 2026 Woolery-Lloyd also warned that office windows deliver a surprising dose of UV. — Hanna Wickes, Fort Worth Star-Telegram, 30 July 2026 But Wingard warns against losing sight of the bigger picture. — Laurie Udesky, Miami Herald, 30 July 2026 See All Example Sentences for warn

Recent Examples of Synonyms for warn

Verb

Mexican authorities alerted United States officials that Yolanda had been found on March 22, the SDSO said at the time.

— Kimberlee Speakman, PEOPLE, 5 Aug. 2026
On Tuesday, when the president was departing Washington for a trip to the West Coast, the Marine One pilot tried to contact the tower at DCA three times to alert air traffic controllers that the presidential helicopter was minutes away from liftoff.

— Kathryn Krupnik, CBS News, 5 Aug. 2026

Definition of alert

Verb

Her doctor advised her to stop clinical hyperpigmentation treatments for her dark spots and uneven skin tone as some ingredients could be unsafe to use while trying to conceive or during pregnancy.

— Kati Chitrakorn, CNN Money, 4 Aug. 2026
The vessel and crew were safe and authorities are investigating, UKMTO said, advising ships to transit with caution.

— Anniek Bao, CNBC, 3 Aug. 2026

Definition of advise

Browse Nearby Words

warm-ups

warn

warned

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Style

“Warn.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/warn. Accessed 7 Aug. 2026.

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Synonyms of warn

verb

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