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

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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

Alfie Cosgrove/News Images/NurPhoto via Getty Images Alvaro Arbeloa’s Fulham have been an exhilarating watch across the early weeks of the Premier League season, but the free-flowing attacking football at Craven Cottage has come at a cost.

— Thom Harris, New York Times, 11 Sep. 2026
Outside of the typical watch parties at local bars, there are several events across town for Monday Night Football.

— Rashad Alexander, Kansas City Star, 11 Sep. 2026

Definition of watch

Noun

Residents in several Cincinnati neighborhoods this week did not get trash picked up this week due to staffing shortages, according to an alert the city sent out this week.

— Scott Wartman, Cincinnati Enquirer, 11 Sep. 2026
Get breaking news alerts on your phone →download the IndyStar app.

— Aubrey Wright, IndyStar, 11 Sep. 2026

Definition of alert

Noun

Too many Black women leave childbirth feeling unheard, and many doulas walk into labor rooms believing that vigilance is what keeps their patients safe.

— Debra Eluobaju, STAT, 3 Sep. 2026
Such vigilance and concerted action spurred self-regulation in movies and television decades ago.

— The Christian Science Monitor, Christian Science Monitor, 31 Aug. 2026

Definition of vigilance

Browse Nearby Words

redacts

red alert

red-blooded

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“Red alert.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20alert. Accessed 12 Sep. 2026.

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Synonyms of red alert

noun

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