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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Example Sentences
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Recent Examples of red alert
This isn’t the first time Martinelli’s attempts to leave Panama have been thwarted — previously, Nicaragua canceled his travel plans over fears of an Interpol red alert notice, which asks police agencies around the world to arrest someone on sight.
—
Antonio Maria Delgado, Miami Herald, 4 Apr. 2025
City authorities issued two red alerts for road ice and blizzard dangers, while several districts canceled classes for Monday, the Global Times reported.
—Jessie Yeung, CNN, 2 Mar. 2025
But with the Cannes Film Market just around the corner, industry are suddenly on red alert and the impact is already being felt.
—Andreas Wiseman, Deadline, 5 May 2025
The app uses an algorithm that warns patients using yellow or red alerts.
—IEEE Spectrum, 6 Mar. 2021
See All Example Sentences for red alert
Antonio Maria Delgado, Miami Herald, 4 Apr. 2025
City authorities issued two red alerts for road ice and blizzard dangers, while several districts canceled classes for Monday, the Global Times reported.
—Jessie Yeung, CNN, 2 Mar. 2025
But with the Cannes Film Market just around the corner, industry are suddenly on red alert and the impact is already being felt.
—Andreas Wiseman, Deadline, 5 May 2025
The app uses an algorithm that warns patients using yellow or red alerts.
—IEEE Spectrum, 6 Mar. 2021
See All Example Sentences for red alert
Recent Examples of Synonyms for red alert
Noun
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Almost 85 million Americans from South Dakota to Texas and North Carolina to Florida were already under National Weather Service extreme heat warnings, watches or advisories July 21.—
John Bacon,
USA Today,
21 July 2025
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While traditional watch bands are made from a wide range of materials, from stainless steel to leather, smartwatch bands are typically made from more synthetic materials.—
Jasmine Laws,
MSNBC Newsweek,
21 July 2025
Noun
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News alerts in your inbox: Don't miss the important news of the day.—
Lorenzino Estrada,
AZCentral.com,
30 July 2025
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The traffic alert was reported Monday at 5:32 p.m., and the most recent report regarding this incident was released on Monday at 6:31 p.m.—
Kansas City Star Bot
Updated July 29,
Kansas City Star,
29 July 2025
Noun
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Only continuous efforts and vigilance can safeguard American democracy and create a more equal and just society.—
Time,
Time,
16 July 2025
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Exposure management is about ongoing vigilance and dynamic measurement.—
Tony Bradley,
Forbes.com,
15 July 2025
Cite this Entry
“Red alert.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20alert. Accessed 5 Aug. 2025.
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