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
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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
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
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My dog in training is learning how to alert me to specific medical conditions and respond to assist me.—
Jeanne Phillips,
Mercury News,
14 June 2026
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California’s Earthquake Early Warning system uses seismic sensors, ground-motion monitoring, and alerting technology to deliver warnings to people via cell phones before the strongest shaking arrives, according to the official website.—
Brandi D. Addison,
USA Today,
13 June 2026
Verb
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Anyone who may have been exposed to measles should first determine whether they have been vaccinated against measles by checking their immunization records, the public health department advised.—
Connor Sheets,
Los Angeles Times,
14 June 2026
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Jon Hyman, chair of the employment and labor practice at the Wickens Herzer Panza law firm, advises his clients to trust individual managers to work out arrangements on a case-by-case basis.—
Jessica Guynn,
USA Today,
14 June 2026
Cite this Entry
“Warn.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/warn. Accessed 22 Jun. 2026.
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