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
This combination of inflation, slowing economic growth and market instability is a red flag for anyone who depends on their investments for retirement income.
—
David Abreu, Forbes.com, 3 June 2025
This is another red flag, as Toshiba’s website says its Canvio portable HDDs only go up to 4TB.
—ArsTechnica, 3 June 2025
Its angular design leans midcentury modern and the sleek-looking red flag plays with proportion in a visually intriguing way.
—Blake Bakkila, Architectural Digest, 3 June 2025
Understanding the gravity of a red flag warning and adhering to these precautions is paramount in averting wildfires during these perilous conditions.
—Ca Weather Bot, Sacbee.com, 1 June 2025
See All Example Sentences for red flag
David Abreu, Forbes.com, 3 June 2025
This is another red flag, as Toshiba’s website says its Canvio portable HDDs only go up to 4TB.
—ArsTechnica, 3 June 2025
Its angular design leans midcentury modern and the sleek-looking red flag plays with proportion in a visually intriguing way.
—Blake Bakkila, Architectural Digest, 3 June 2025
Understanding the gravity of a red flag warning and adhering to these precautions is paramount in averting wildfires during these perilous conditions.
—Ca Weather Bot, Sacbee.com, 1 June 2025
See All Example Sentences for red flag
Recent Examples of Synonyms for red flag
Noun
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Your skin may be sensitive after red light exposure.—
Sherri Gordon,
Health,
3 June 2025
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Florida has been on fire on the road, averaging 4.75 red lights 🚨 per game away from home, the fifth-highest mark in NHL history.—
James Mirtle,
New York Times,
22 May 2025
Noun
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The slugger scorched a fastball that looked to go over the right-field wall, but Josh Lowe was there to catch the ball on the warning track.—
Fiifi Frimpong,
The Orlando Sentinel,
14 June 2025
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The director of the Los Angeles Police Department's union slammed city and state leadership while issuing a stark warning to would-be anti-Immigration and Customs Enforcement rioters.—
Peter D'Abrosca,
FOXNews.com,
14 June 2025
Noun
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The Dolphins offered a sign that his rehab was progressing positively in March, restructuring his contract to convert $9.7 million of his 2024 salary into a signing bonus.—
Cameron Priester,
Sun Sentinel,
4 June 2025
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Still, parents should not take the review as a sign that the US formula market is in disarray or in any way harmful to infants, Abrams said.—
Sandee LaMotte,
CNN Money,
4 June 2025
Cite this Entry
“Red flag.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20flag. Accessed 18 Jun. 2025.
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