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
In one of the latest instances of extreme weather, at least 30 people died this week on the outskirts of Beijing after the city issued the highest-level red alert for heavy rain, according to state media.
—
Evelyn Cheng, CNBC, 31 July 2025
Aviation officials issued a red alert for passing aircraft due to the height of the ash plume, which reached several kilometers into the atmosphere.
—Gabe Whisnant, MSNBC Newsweek, 30 July 2025
Over the weekend, Kerr County issued a code red alert because of an excessive rainfall forecast.
—Marlene Lenthang, NBC news, 14 July 2025
Italy, meanwhile, issued heat wave red alerts across 17 cities, including Milan and Rome.
—Karissa Waddick, USA Today, 2 July 2025
See All Example Sentences for red alert
Evelyn Cheng, CNBC, 31 July 2025
Aviation officials issued a red alert for passing aircraft due to the height of the ash plume, which reached several kilometers into the atmosphere.
—Gabe Whisnant, MSNBC Newsweek, 30 July 2025
Over the weekend, Kerr County issued a code red alert because of an excessive rainfall forecast.
—Marlene Lenthang, NBC news, 14 July 2025
Italy, meanwhile, issued heat wave red alerts across 17 cities, including Milan and Rome.
—Karissa Waddick, USA Today, 2 July 2025
See All Example Sentences for red alert
Recent Examples of Synonyms for red alert
Noun
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This watch guide was created using technology provided by Data Skrive.—
Data Skrive,
New York Times,
6 Oct. 2025
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How the team adjusts in their first game without their best player will be worth the watch.—
Miami Herald,
Miami Herald,
5 Oct. 2025
Noun
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This patience is watchfulness, not idleness.—
Francois Botha,
Forbes.com,
7 Sep. 2025
Noun
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Be sure to sign up for text alerts and follow us on Instagram, TikTok and Flipboard to stay updated!—
Kasey Caminiti,
USA Today,
4 Oct. 2025
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The alert is for Ashe, Alleghany and Watauga counties.—
NC Weather Bot,
Charlotte Observer,
4 Oct. 2025
Noun
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Known to power all-around mental clarity, alertness, and focus, this powder is an ideal pick-me-up for a post-lunch afternoon work slump or mid-morning meeting.—
Brianna Peters,
Vogue,
1 Oct. 2025
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However, this depression of the CNS may result in drowsiness, sedation, and lack of mental alertness.—
Alex Yampolsky,
Verywell Health,
29 Sep. 2025
Noun
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Recent years have seen dozens of drownings in the region, underscoring the need for vigilance and adherence to official warnings.—
Anna Skinner,
MSNBC Newsweek,
30 Sep. 2025
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In summary, when facing the threat of lightning, vigilance and preparedness are your best allies.—
Southern California Weather Report,
Oc Register,
29 Sep. 2025
Cite this Entry
“Red alert.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20alert. Accessed 9 Oct. 2025.
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