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
During a search of Hernandez Santana's car, detectives found a handwritten note that mentioned Epstein and red flags and said not to support Patel, Deputy FBI Director Dan Bongino or Attorney General Pam Bondi, according to the complaint.
—
Alex Stone, ABC News, 22 Sep. 2025
Options for intervention range from monitoring the person or hardening a target like a school, Amman said, or, in more extreme cases, invoking red flag laws or involuntarily committing someone.
—Ian Berry, CNN Money, 22 Sep. 2025
His was not the only hard day that saw a record six red flags interrupt the session, which took more than two hours to complete.
—Jonathan M. Gitlin, ArsTechnica, 22 Sep. 2025
If a page asks for unnecessary information, like your full Social Security number, banking details or unrelated logins, treat it as a red flag.
—Kurt Knutsson, FOXNews.com, 22 Sep. 2025
See All Example Sentences for red flag
Alex Stone, ABC News, 22 Sep. 2025
Options for intervention range from monitoring the person or hardening a target like a school, Amman said, or, in more extreme cases, invoking red flag laws or involuntarily committing someone.
—Ian Berry, CNN Money, 22 Sep. 2025
His was not the only hard day that saw a record six red flags interrupt the session, which took more than two hours to complete.
—Jonathan M. Gitlin, ArsTechnica, 22 Sep. 2025
If a page asks for unnecessary information, like your full Social Security number, banking details or unrelated logins, treat it as a red flag.
—Kurt Knutsson, FOXNews.com, 22 Sep. 2025
See All Example Sentences for red flag
Recent Examples of Synonyms for red flag
Noun
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One witness said they were stopped at a red light heading south on Dale Street and that Burks was walking north against the traffic light, according to the criminal complaint.—
Nick Ferraro,
Twin Cities,
22 Sep. 2025
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Hooga is figured out how to offer a leading red light therapy product that’s practical, affordable, and of the highest quality.—
Omaid Homayun,
Forbes.com,
19 Sep. 2025
Noun
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What actions are necessary during a red flag warning?—
CA Weather Bot,
Sacbee.com,
25 Sep. 2025
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That is why Trump must take the Saudi-Pakistan defense pact not as a rejection, but as a warning shot.—
Firas Maksad,
Time,
25 Sep. 2025
Noun
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The divorce will be finalized once the judge gives a sign-off.—
Anthony Robledo,
USA Today,
26 Sep. 2025
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That is now down to 3%, according to JLL, a clear sign of stabilization.—
Diana Olick,
CNBC,
25 Sep. 2025
Cite this Entry
“Red flag.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20flag. Accessed 29 Sep. 2025.
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