as in red light
something that tells of approaching danger or risk
the résumé she accidentally left on the office printer was a red flag that she was planning to quit
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Recent Examples of red flag
Talley, with his lengthy rap sheet, should have scored poorly and raised many red flags.
—
Chicago Tribune, 3 May 2026
Lightning nearby red flags everything.
—David J. Neal, Miami Herald, 2 May 2026
Blurry vision — like the kind Wayans experienced — is another red flag.
—Samantha Agate, Charlotte Observer, 1 May 2026
Ingber also points to a mismatch between intake and output as a red flag.
—Lauryn Higgins, Flow Space, 1 May 2026
See All Example Sentences for red flag
Chicago Tribune, 3 May 2026
Lightning nearby red flags everything.
—David J. Neal, Miami Herald, 2 May 2026
Blurry vision — like the kind Wayans experienced — is another red flag.
—Samantha Agate, Charlotte Observer, 1 May 2026
Ingber also points to a mismatch between intake and output as a red flag.
—Lauryn Higgins, Flow Space, 1 May 2026
See All Example Sentences for red flag
Recent Examples of Synonyms for red flag
Noun
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Nevada lacks a key seismic safety tool that California, Oregon and Washington all have — the earthquake early warning system run by the USGS, which sends alerts to smartphones or computers before the shaking starts.—
Los Angeles Times,
Los Angeles Times,
4 May 2026
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This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service.—
CA Weather Bot,
Sacbee.com,
4 May 2026
Noun
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Other factors, including scars, bruising, ligature marks and signs of malnutrition, supported evidence of long-term abuse, the warrant affidavit said.—
Justin Muszynski,
Hartford Courant,
28 Apr. 2026
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Many of the victims of Saturday's attack were reportedly from a village near the town of Cajibío, where a vigil was held Monday, with hundreds of people dressing in white as a sign of peace.—
Frank Andrews,
CBS News,
28 Apr. 2026
Cite this Entry
“Red flag.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20flag. Accessed 10 May. 2026.
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