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
Relevance
Antonyms & Near Antonyms
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
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
-
Remove any watches, rings or jewelry that could constrict swelling.—
Sacbee.com,
Sacbee.com,
9 July 2025
-
Walmart The Lily 2 is Garmin’s lovely little lady watch.—
Simon Hill,
Wired News,
9 July 2025
Noun
-
Under the sheriff’s policies and procedures, Ornelas would have been flagged in the jail’s electronic medical records system as requiring behavioral health services — an alert that should have shown up when he was booked in June 2023, the lawsuit says.—
Kelly Davis,
San Diego Union-Tribune,
5 July 2025
-
That’s why staying alert, keeping your software up to date and following good security habits can go a long way in protecting your device.—
Kurt Knutsson,
FOXNews.com,
4 July 2025
Noun
-
But with the right behavioral analytics and cross-functional vigilance, patterns emerge.—
Michael Barnhart,
Fortune,
3 July 2025
-
While Austin’s crime trends are encouraging in some respects, ongoing challenges demand vigilance and adaptability.—
Daniel Fusch,
Austin American Statesman,
2 July 2025
Cite this Entry
“Red alert.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20alert. Accessed 19 Jul. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share