WARNER Synonyms: 26 Similar and Opposite Words

warn

verb

ˈwȯrn

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

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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 Initial forecasts warned of $200 oil and widespread shortages, but market mechanisms spurred rapid adaptation. —

George Calhoun, Forbes.com, 18 June 2026 Public health specialists have warned that military members may suffer unnecessary complications from the flu after the vaccination mandate was ended and fear that severe cases will continue to climb in subsequent flu seasons if preventive vaccinations aren't given to those most at risk. —

Luis Martinez, ABC News, 18 June 2026 On Thursday afternoon, the Fremont County Sheriff's Office posted an alert on its Facebook page warning people about the fire. —

Jennifer McRae, CBS News, 18 June 2026 City Budget Director Jim Shannon warned that losing those streams would jeopardize neighborhood public resources. —

Ryan MacAsero, Mercury News, 18 June 2026 See All Example Sentences for warn

Recent Examples of Synonyms for warn

Verb

The plot was foiled when a suspect’s mother alerted police, court documents said.

— Robert Abitbol, USA Today, 20 June 2026
Illinois state and local law enforcement are prohibited from alerting, let alone assisting, immigration agents seeking to detain someone unless a judge has issued an arrest warrant for the subject.

— Laura Rodríguez Presa, Chicago Tribune, 19 June 2026