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
The National Weather Service has issued a red flag warning for strong winds and low humidity from 10 a.m. until 7 p.m. Saturday.
—
Todd Karpovich, Baltimore Sun, 1 Mar. 2025
The two had surprisingly little trouble in their time together, seeming to blend in their lives pretty seamlessly and with no big red flags when meeting family, either.
—Lissete Lanuza Sáenz, StyleCaster, 28 Feb. 2025
High temperatures are not part of the requirements for a red flag warning, which are issued by the National Weather Service year-round.
—Christopher Cann, USA TODAY, 28 Feb. 2025
One of the first ‘red flags’ to appear at the original Fyre Festival was when one of its main acts, Blink-182, had dropped off the festival last minute.
—Quentin Thane Singer, Forbes, 26 Feb. 2025
See All Example Sentences for red flag
Todd Karpovich, Baltimore Sun, 1 Mar. 2025
The two had surprisingly little trouble in their time together, seeming to blend in their lives pretty seamlessly and with no big red flags when meeting family, either.
—Lissete Lanuza Sáenz, StyleCaster, 28 Feb. 2025
High temperatures are not part of the requirements for a red flag warning, which are issued by the National Weather Service year-round.
—Christopher Cann, USA TODAY, 28 Feb. 2025
One of the first ‘red flags’ to appear at the original Fyre Festival was when one of its main acts, Blink-182, had dropped off the festival last minute.
—Quentin Thane Singer, Forbes, 26 Feb. 2025
See All Example Sentences for red flag
Recent Examples of Synonyms for red flag
Noun
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Listen to this article Loading your audio article A drunk motorist who ran a red light and killed a pedestrian while driving more than 70 mph through a Brooklyn intersection has been sentenced to three to nine years in prison.—
Leonard Greene,
New York Daily News,
28 Feb. 2025
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During his escape, Conyers ran a red light at Parker Road and Lincoln Avenue and fatally struck pedestrian Jossy Fernando Pinto, 51.—
Max Levy,
The Denver Post,
28 Feb. 2025
Noun
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The warning about the security measures put in place were posted on the naval base’s Facebook page.—
Washington Examiner Staff,
Washington Examiner - Political News and Conservative Analysis About Congress, the President, and the Federal Government,
26 Feb. 2025
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The State Department has issued a travel warning for U.S. citizens in Tamaulipas, citing high crime and kidnappings amid ongoing violence between drug cartels.—
Louis Casiano,
Fox News,
26 Feb. 2025
Noun
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These signs include avoiding each other or keeping their distance, swiping, biting, dilated pupils, flattened ears, hissing, litter box guarding, urinating outside of the litter box, territorial aggression, and toy hoarding.—
Dan Perry,
Newsweek,
28 Feb. 2025
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Officials have said no signs of foul play are apparent, and an autopsy found no external trauma to either Hackman or Arakawa.—
Rebecca Cohen,
NBC News,
28 Feb. 2025
Cite this Entry
“Red flag.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20flag. Accessed 12 Mar. 2025.
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