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
If a company says your package is stuck in customs or asks for additional payment due to tariffs, that’s a major red flag.
—
Betty Lin-Fisher, USA Today, 7 June 2025
Everything the Phillies measure with their pitchers to catch potential red flags has not indicated any physical issues.
—Matt Gelb, New York Times, 6 June 2025
This suggests that most of the buyers are foreigners, certainly a red flag to those familiar with the crypto and financial world.
—Tom Jurkowsky, Baltimore Sun, 5 June 2025
This is a massive red flag when considering the legitimacy of any website like this.
—Jeremy Hanna, MSNBC Newsweek, 4 June 2025
See All Example Sentences for red flag
Betty Lin-Fisher, USA Today, 7 June 2025
Everything the Phillies measure with their pitchers to catch potential red flags has not indicated any physical issues.
—Matt Gelb, New York Times, 6 June 2025
This suggests that most of the buyers are foreigners, certainly a red flag to those familiar with the crypto and financial world.
—Tom Jurkowsky, Baltimore Sun, 5 June 2025
This is a massive red flag when considering the legitimacy of any website like this.
—Jeremy Hanna, MSNBC Newsweek, 4 June 2025
See All Example Sentences for red flag
Recent Examples of Synonyms for red flag
Noun
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There's two options with the switch: the first will turn on a red light, to tell you the thermal brush is heating up.—
Nena Farrell,
Wired News,
20 June 2025
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Lamping allegedly ran a red light at the intersection of the two roads, and the Chevrolet pickup struck the driver’s side of the Toyota at highway speed, the highway patrol said.—
Kendrick Calfee,
Kansas City Star,
18 June 2025
Noun
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While major plot developments have been withheld to preserve the viewing experience, the network has requested spoiler warnings on all reviews.—
Alison Herman,
Variety,
26 June 2025
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Many of the latest driver-assist safety systems like forward automatic emergency braking and blind spot warning abound in this segment to protect one’s most-precious cargo.—
Jim Gorzelany,
Forbes.com,
26 June 2025
Noun
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District administrators said the signs — including one displaying open hands of different skin tones — violated West Ada’s district policy.—
Emma Epperly,
Idaho Statesman,
28 June 2025
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Moon sign planting dates Above-ground crops: 1, 4, 5, 6, 9, 10, 27, 28, 31 Below-ground crops: 14, 15, 18, 19, 22, 23 Control weeds: 11, 12, 13, 20, 21 Prune trees and shrubs: 7, 8, 16, 17, 24, 25, 26 3.—
Tom MacCubbin,
The Orlando Sentinel,
28 June 2025
Cite this Entry
“Red flag.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20flag. Accessed 3 Jul. 2025.
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