WARN 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

Relevance

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 But conditions in the global oil market are set to worsen in the next few weeks, Morgan Stanley analysts warned, as the rate of releases from global strategic reserves plummets to less than a third of current levels. —

Tim McDonnell, semafor.com, 28 May 2026 And the pope doubled down on his stance later in the week, warning that control of data and digital platforms should not be controlled by a small group of powerful actors—basically taking Silicon Valley to task against using technology to control humanity. —

Megan Poinski, Forbes.com, 28 May 2026 Health experts warn that exposure to contaminated water can cause symptoms including vomiting, diarrhea and infections. —

Monique John, CBS News, 28 May 2026 Don’t be impatient Avoid the temptation to venture outdoors during the calm in the eye of the storm, the National Hurricane Center warns. —

Howard Cohen, Miami Herald, 28 May 2026 See All Example Sentences for warn

Recent Examples of Synonyms for warn

Verb

The lock gives you an extra physical barrier on inward‑swinging doors, and the wedge alarm screams a loud 120-decibel if anyone tries to push the door—loud enough to wake you or alert others nearby.

— Julie Rousseau, Travel + Leisure, 24 May 2026
Many identity theft protection services monitor the major credit bureaus and alert you to new accounts, inquiries or changes to your file.

— Kurt Knutsson, FOXNews.com, 23 May 2026