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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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, released to celebrate the 30th anniversary of the Overseas, comes with three interchangeable straps that can be swapped without tools.

— Rachel Cormack, Robb Report, 30 Sep. 2026
Skechers’ revenues nearly tripled to over $9 billion during his watch.

— Evan Clark, Footwear News, 30 Sep. 2026

Definition of watch

Noun

Detection may increase, but clinicians and quality teams inherit an expanding queue of low-value alerts.

— Arpan Saxena, Forbes.com, 25 Sep. 2026
The pitch is aimed at broadcasters, streaming platforms and telecom operators whose existing monitoring stacks generate fragmented alerts that engineers must manually correlate and react to.

— Callum McLennan, Variety, 25 Sep. 2026

Definition of alert

Noun

Ellen displays intimacy with Lara in front of Ruby; Lara withholds and then offers attention; Ruby watches with envy, desire, and the alertness of a guest who cannot tell whether she is being welcomed or appraised.

— Literary Hub, Literary Hub, 24 Sep. 2026
Kratom products contain chemicals that can increase alertness, physical energy, and talkativeness.

— Ivan Pereira, ABC News, 23 Sep. 2026

Definition of alertness

Noun

All the drones were shot down and caused no damage, authorities said, adding the action underscored Pakistan's round-the-clock vigilance and readiness.

— ABC News, ABC News, 23 Sep. 2026
Some studies indicate that nicotine may temporarily enhance attention, vigilance, reaction time and some aspects of working memory, but results are mixed.

— Hasmeena Kathuria, The Conversation, 22 Sep. 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 1 Oct. 2026.

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Synonyms of red alert

noun

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