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
The National Park Service (NPS) is warning visitors to the Arizona and Utah deserts of two sneaky dangers.
—
Outside, 5 Mar. 2026
As drones circled overhead, messages spread on WhatsApp, warning people to open their windows so that they wouldn’t be shattered by blasts.
—Rania Abouzeid, New Yorker, 5 Mar. 2026
United Airlines is warning passengers to wear headphones when using their devices on flights or risk being removed from their flight.
—Marley Malenfant, Austin American Statesman, 5 Mar. 2026
Details of the legislation HB 5004 increases support for foster parents and those providing emergency placement but some child advocates warn the bill does not address chronically low foster care reimbursement rates.
—Livi Stanford, Hartford Courant, 5 Mar. 2026
See All Example Sentences for warn
Outside, 5 Mar. 2026
As drones circled overhead, messages spread on WhatsApp, warning people to open their windows so that they wouldn’t be shattered by blasts.
—Rania Abouzeid, New Yorker, 5 Mar. 2026
United Airlines is warning passengers to wear headphones when using their devices on flights or risk being removed from their flight.
—Marley Malenfant, Austin American Statesman, 5 Mar. 2026
Details of the legislation HB 5004 increases support for foster parents and those providing emergency placement but some child advocates warn the bill does not address chronically low foster care reimbursement rates.
—Livi Stanford, Hartford Courant, 5 Mar. 2026
See All Example Sentences for warn
Recent Examples of Synonyms for warn
Verb
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Sirens sounded across Israel as a precautionary measure, alerting the public to potential missile attacks, the IDF confirmed.—
Bojan Stojkovski,
Interesting Engineering,
28 Feb. 2026
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If a customer uses a QR code to report a messy bathroom, the manager will be alerted.—
Dee-Ann Durbin,
Los Angeles Times,
27 Feb. 2026
Verb
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Travelers are advised to check with their airline or travel agent as soon as possible for information on rebooking and refunds, though passengers are reporting difficulties getting assistance because of high caller volumes.—
Karla Cripps,
CNN Money,
2 Mar. 2026
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The statement added that embassy personnel were sheltering in place and advised American citizens to review their emergency security plans.—
Sujita Sinha,
Interesting Engineering,
2 Mar. 2026
Cite this Entry
“Warn.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/warn. Accessed 8 Mar. 2026.
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