RED ALERT Synonyms: 39 Similar and Opposite Words

red alert

noun

Definition of red alert

as in watch

the state of being constantly attentive and responsive to signs of opportunity, activity, or danger the paparazzi were on red alert for sightings of the hot new Hollywood couple

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 red alert Italy’s Health Ministry placed all 27 cities monitored under its national heat surveillance system on red alert Thursday — the first time this year the entire network has been under the highest warning level simultaneously. — ABC News, 6 Aug. 2026 Sunday’s stage through the Massif Central was won by Mathieu van der Poel, out-sprinting a small breakaway group, having been shortened by 30km due to a ‘red alert’ heatwave in the region. — Jacob Whitehead, New York Times, 13 July 2026 The center on Saturday also issued the first red alert for rainstorms of the year, according to state broadcaster CCTV. — Los Angeles Times, 11 July 2026 Three-quarters of France, encompassing tens of millions of people, was put under a red alert for extreme heat on Thursday and Friday as the mercury topped 40 C (104 F) in some locations, including in Paris. — Kirsten Grieshaber, Fortune, 27 June 2026 See All Example Sentences for red alert

Recent Examples of Synonyms for red alert

Noun

The watch is for Yosemite, Upper San Joaquin River, Kaiser to Rodgers Ridge, Kings Canyon and Sequoia.

— CA Weather Bot, Sacbee.com, 11 Nov. 2026
While Patrick tried to ban THC products last year, Goodwin said that won't happen on her watch.

— CBS News, CBS News, 11 Nov. 2026

Definition of watch

Noun

Today, the typical marketing executive receives a constant stream of recommendations, performance alerts, audience opportunities, trend reports and predictive forecasts.

— Tim Ringel, Forbes.com, 6 Nov. 2026
Finally, the alert urges hospitals to have offline backups of their systems.

— Jenna McLaughlin, NPR, 6 Nov. 2026

Definition of alert

Noun

In one effort to better understand what's going on, scientists are learning how specialized cells in our eyes turn the blue wavelength part of the light spectrum into neural signals affecting mood and alertness.

— ABC News, ABC News, 4 Nov. 2026
Caffeine pouches have a variety of nicknames Caffeine is a stimulant that increases alertness, energy and brain activity.

— Cheyanne Mumphrey, Los Angeles Times, 3 Nov. 2026

Definition of alertness

Noun

His political concerns and active vigilance are accompanied by a stubborn smile and frequent laughter.

— Tim Greiving, Los Angeles Times, 3 Nov. 2026
That also meant constant vigilance, becoming my son’s shadow during his most vulnerable meltdowns and dysregulations.

— Literary Hub, Literary Hub, 28 Oct. 2026

Definition of vigilance

Browse Nearby Words

redacts

red alert

red-blooded

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Style

“Red alert.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20alert. Accessed 13 Nov. 2026.

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Synonyms of red alert

noun

Example Sentences

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