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 Experts have warned of the potential dangers of overcrowding, especially after two climbers died around the time of that record-setting day. —

CBS News, 4 June 2026 Now, Goicochea warned, the current garbage collection situation, combined with rising temperatures and impending rains, could worsen the situation. —

ABC News, 4 June 2026 Climate scientists warned that the influence of politics in science funding decisions could prevent important new scientific breakthroughs and set their field back years. —

Andrew Freedman, CNN Money, 4 June 2026 In May 2026, French President Emmanuel Macron called Lukashenko and warned him against deeper involvement in Russia’s war. —

Tatsiana Kulakevich, The Conversation, 4 June 2026 See All Example Sentences for warn

Recent Examples of Synonyms for warn

Verb

The animals in Laurie’s house, hearing the patrol cars and the helicopters before the humans can, alert them that there is something wrong.

— Rafaela Bassili, Vulture, 1 June 2026
Prior to the confirmation, Bear told followers that witnesses had reportedly seen Matt near a river in Washington before authorities were alerted.

— Deirdre Durkan, PEOPLE, 31 May 2026