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
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Recent Examples of red alert
Over the weekend, Kerr County issued a code red alert because of an excessive rainfall forecast.
—
Marlene Lenthang, NBC news, 14 July 2025
France's national weather agency kept four departments under red alert on Wednesday after temperatures exceeded 104 in many towns.
—arkansasonline.com, 3 July 2025
Italy, meanwhile, issued heat wave red alerts across 17 cities, including Milan and Rome.
—Karissa Waddick, USA Today, 2 July 2025
Iran’s ballistic missile barrages set off red alert sirens across the entire country.
—Oren Liebermann, CNN Money, 26 June 2025
See All Example Sentences for red alert
Marlene Lenthang, NBC news, 14 July 2025
France's national weather agency kept four departments under red alert on Wednesday after temperatures exceeded 104 in many towns.
—arkansasonline.com, 3 July 2025
Italy, meanwhile, issued heat wave red alerts across 17 cities, including Milan and Rome.
—Karissa Waddick, USA Today, 2 July 2025
Iran’s ballistic missile barrages set off red alert sirens across the entire country.
—Oren Liebermann, CNN Money, 26 June 2025
See All Example Sentences for red alert
Recent Examples of Synonyms for red alert
Noun
-
The show, now in its sixth year, has become an important date on the calendar for watch lovers and the trade alike, and stands as the most inclusive show based on new introductions from the 66 participating brands.—
Carol Besler,
Forbes.com,
8 Sep. 2025
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This watch guide was created using technology provided by Data Skrive.—
Data Skrive,
New York Times,
8 Sep. 2025
Noun
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The alert last for around three hours.—
David Brennan,
ABC News,
7 Sep. 2025
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What was once the season of patios and long days has increasingly turned into one of heat advisories, wildfire smoke, and smog alerts.—
Alexandra Emanuelli,
Travel + Leisure,
6 Sep. 2025
Noun
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Drinking coffee before an important task, such as a work project or athletic activity, can help to increase energy and alertness and improve performance.—
Ashley Olivine,
Verywell Health,
28 Aug. 2025
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Authorities have stepped up their cautionary tone in the past year in the hope of raising citizens’ alertness levels.—
Chris Lau,
CNN Money,
27 Aug. 2025
Noun
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Sheriff’s officials stressed the importance of community vigilance.—
Stepheny Price,
FOXNews.com,
3 Sep. 2025
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Its continued survival is a reminder that conservation requires not just success stories but constant vigilance.—
Sarah Kingdom,
Forbes.com,
28 Aug. 2025
Cite this Entry
“Red alert.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20alert. Accessed 9 Sep. 2025.
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