Definition of warnnext
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

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 Petek has warned of a possible downturn — with big revenue declines — if the artificial intelligence stock market boom fades. Dan Walters, Mercury News, 29 Jan. 2026 The guidance called for warning labels on alcohol containers, similar to those on cigarette packs. Alexander Nazaryan, New Yorker, 29 Jan. 2026 Briceno warns that loading on the lip tint can lead to product transfer, harsh edges, and a patchy finish. Grace McCarty, Glamour, 29 Jan. 2026 Fahrenheit, the State Emergency Service warned. Aamer Madhani, Los Angeles Times, 29 Jan. 2026 See All Example Sentences for warn
Recent Examples of Synonyms for warn
Verb
  • The lawsuit claims Saint Ann’s leadership was alerted twice in early 2024 that explicit images of young girls were circulating among students on Snapchat but failed to notify police or intervene beyond internal meetings.
    Stepheny Price, FOXNews.com, 1 Feb. 2026
  • The School Board decided to assign the district’s chief auditor to quickly review the referendum bonuses, while also alerting the inspector general’s office.
    Scott Travis, Sun Sentinel, 1 Feb. 2026
Verb
  • Venezuelans in need of consular support in the US typically had to travel to a third country, like Canada or Mexico, with another acceptable form of documentation to get it; that’s even what the International Organization for Migration advised.
    Maeva Bambuck, CNN Money, 1 Feb. 2026
  • Instead, the plant expert advises only repotting when roots circling the pot become visible and/or when growth slows.
    Patricia Shannon, Southern Living, 1 Feb. 2026

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Cite this Entry

“Warn.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/warn. Accessed 3 Feb. 2026.

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