red alert

noun

Synonyms of red alertnext
: the final stage of alert in which enemy attack appears imminent
broadly : a state of alert brought on by impending danger

Examples of red alert in a Sentence

The troops have been put on red alert. the paparazzi were on red alert for sightings of the hot new Hollywood couple
Recent Examples on the Web
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.
The storm passed about 60 miles north of the capital, Antananarivo, one of the regions under a red alert warning for possible flooding. Sarah Tetaud The Associated Press, Arkansas Online, 12 Feb. 2026 But the code red alert reveals a real concern within OpenAI that the $500 billion company could lose its position as the standard-bearer and pacesetter for generative AI technology. Jeremy Kahn, Fortune, 17 Dec. 2025 Big yikes, but Orgon can’t see the red alerts through his rosy glasses. Sara Holdren, Vulture, 17 Dec. 2025 The White House was briefly locked down with a condition red alert, which The New York Times notes signifies a possible threat to life. Jon Blistein, Rolling Stone, 27 Nov. 2025 See All Example Sentences for red alert

Word History

First Known Use

1941, in the meaning defined above

Time Traveler
The first known use of red alert was in 1941

Browse Nearby Words

Cite this Entry

“Red alert.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/red%20alert. Accessed 7 Mar. 2026.

Last Updated: - Updated example sentences
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