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
When asked specifically which gun laws could prevent something like the weekend shooting in Kansas City in the future, Johnson suggested lawmakers adopt a slew of changes including licensing, background checks and red flag laws.
—
Jack Harvel, Kansas City Star, 20 Feb. 2026
The Boies law firm previously helped obtain $365 million of settlements with JPMorgan Chase and Deutsche Bank after accusing them of missing red flags about Epstein, once a lucrative client.
—Reuters, NBC news, 20 Feb. 2026
To his credit, Elon didn’t stop waving red flags.
—Pat Beall, Sun Sentinel, 20 Feb. 2026
The biggest red flag most people miss The message claims to be about YouTube TV.
—Kurt Knutsson, FOXNews.com, 20 Feb. 2026
See All Example Sentences for red flag
Jack Harvel, Kansas City Star, 20 Feb. 2026
The Boies law firm previously helped obtain $365 million of settlements with JPMorgan Chase and Deutsche Bank after accusing them of missing red flags about Epstein, once a lucrative client.
—Reuters, NBC news, 20 Feb. 2026
To his credit, Elon didn’t stop waving red flags.
—Pat Beall, Sun Sentinel, 20 Feb. 2026
The biggest red flag most people miss The message claims to be about YouTube TV.
—Kurt Knutsson, FOXNews.com, 20 Feb. 2026
See All Example Sentences for red flag
Recent Examples of Synonyms for red flag
Noun
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Sitting at red lights with nobody behind the wheel, just vibing.—
Kim Komando,
FOXNews.com,
21 Feb. 2026
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The driver of the vehicle that ran the red light was cooperating with police after the incident, officials said.—
Nick Lentz,
CBS News,
21 Feb. 2026
Noun
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Local officials echoed state of emergency declarations and issued travel bans while the tens of millions of people under blizzard warnings hunkered down.—
Danya Gainor,
CNN Money,
24 Feb. 2026
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The State Department later, relaxed its warning for certain areas.—
Kathryn Palmer,
USA Today,
24 Feb. 2026
Noun
-
Stay vigilant by monitoring the sky for ominous signs and listening for the telltale sound of thunder.—
Bay Area Weather Report,
Mercury News,
18 Feb. 2026
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It's all told from the vantage point of a woman trying to make sense of her life in the face of devastation, sometimes grasping for signs that only hindsight can uncover.—
Kathryn Palmer,
USA Today,
18 Feb. 2026
Cite this Entry
“Red flag.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20flag. Accessed 25 Feb. 2026.
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