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
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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
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Under his watch, the once-traditional fast-food chain had launched updatable menu screens in all restaurants and a sophisticated mobile app.—
Elie Ofek,
Harvard Business Review,
14 Sep. 2025
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Ham-And-Cheese Sliders Grandma's stash of Hawaiian rolls is the secret to the perfect sliders, especially for a Sunday football watch party.—
Symiah Dorsey,
Southern Living,
14 Sep. 2025
Noun
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This patience is watchfulness, not idleness.—
Francois Botha,
Forbes.com,
7 Sep. 2025
Noun
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Some saw the alerts on televisions in the West Wing, others on social media, according to White House staffers who discussed the events on the condition of anonymity.—
Joey Garrison,
USA Today,
14 Sep. 2025
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When the school sent out an emergency alert phone call, the simultaneous rings echoed up and down the line.—
Katie Langford,
Boston Herald,
13 Sep. 2025
Noun
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An article previously shared by Newsweek explains that cats' sleeping postures can communicate comfort, alertness, or even stress.—
Maria Azzurra Volpe,
MSNBC Newsweek,
11 Sep. 2025
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Depending on your tolerance, this could be too much—or just the right amount—to help increase alertness.—
Allison Forsyth,
Health,
10 Sep. 2025
Noun
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In summary, when facing the threat of lightning, preparedness and vigilance are your best allies.—
Bay Area Weather Report,
Mercury News,
10 Sep. 2025
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Local authorities, under increasing national pressure to take action against Tren de Aragua, redoubled their displays of vigilance.—
Jonathan Blitzer,
New Yorker,
8 Sep. 2025
Cite this Entry
“Red alert.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20alert. Accessed 18 Sep. 2025.
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