as in red flags
something that tells of approaching danger or risk
the reporter took her glower as a red light and stopped asking questions
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Recent Examples of red lights
For example, orange lights mark the warm-up segment to activate body’s core, red lights are used for the toning and strength sections, while blue ones define the more relaxing cool-down and stretching bits.
—
Sandra Salibian, Footwear News, 28 Oct. 2025
Buses receive priority at intersections during other times but will still hit some red lights.
—Douglas Hanks, Miami Herald, 23 Oct. 2025
Police clocked the teen driving at speeds over 100 mph without headlights and running red lights.
—Julie Mendes, AZCentral.com, 20 Oct. 2025
This probe covers dozens of dangerous driving incidents, including blowing through red lights, driving in the wrong lane of traffic, and three accidents that resulted in five injuries.
—Chris Isidore, CNN Money, 13 Oct. 2025
And though the visuals start calmly enough, with an old man puttering through a deserted city, the flashing blue, green, and red lights inject a jolt of madness that’s pushed into the surreal as the man confronts giant statue heads of the Weeknd and Moroder floating above the city.
—Jon Blistein, Rolling Stone, 10 Oct. 2025
In the first scenario, FSD-enabled cars have run red lights or come to a stop and then continued before the light turns green.
—PC Magazine, 10 Oct. 2025
Under the dim red lights, the audience and the band became one, swimming in a sea of sound.
—Ivan Kashinsky, NPR, 8 Oct. 2025
After rolling out entrance ramp metering along Interstate 96 in Oakland County, the Michigan Department of Transportation is reminding drivers to pull all the way up to the stop line on red lights.
—Natalie Davies, Freep.com, 1 Oct. 2025
Sandra Salibian, Footwear News, 28 Oct. 2025
Buses receive priority at intersections during other times but will still hit some red lights.
—Douglas Hanks, Miami Herald, 23 Oct. 2025
Police clocked the teen driving at speeds over 100 mph without headlights and running red lights.
—Julie Mendes, AZCentral.com, 20 Oct. 2025
This probe covers dozens of dangerous driving incidents, including blowing through red lights, driving in the wrong lane of traffic, and three accidents that resulted in five injuries.
—Chris Isidore, CNN Money, 13 Oct. 2025
And though the visuals start calmly enough, with an old man puttering through a deserted city, the flashing blue, green, and red lights inject a jolt of madness that’s pushed into the surreal as the man confronts giant statue heads of the Weeknd and Moroder floating above the city.
—Jon Blistein, Rolling Stone, 10 Oct. 2025
In the first scenario, FSD-enabled cars have run red lights or come to a stop and then continued before the light turns green.
—PC Magazine, 10 Oct. 2025
Under the dim red lights, the audience and the band became one, swimming in a sea of sound.
—Ivan Kashinsky, NPR, 8 Oct. 2025
After rolling out entrance ramp metering along Interstate 96 in Oakland County, the Michigan Department of Transportation is reminding drivers to pull all the way up to the stop line on red lights.
—Natalie Davies, Freep.com, 1 Oct. 2025
Recent Examples of Synonyms for red lights
Noun
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Top red flags related to cleanliness include a dirty bathroom, dishes or takeout boxes everywhere, no shower curtain, having a mattress on the floor, and clothes on the floor.—
Essence,
Essence,
23 Oct. 2025
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Why this could be a scam John's experience shows several red flags.—
Kurt Knutsson,
FOXNews.com,
23 Oct. 2025
Noun
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The footage, however, does not clearly show what preceded the alleged incident or whether any warnings were given.—
Martha McHardy,
MSNBC Newsweek,
25 Oct. 2025
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China conducted military exercises in Serbia in July despite stern warnings from the European Union, and Belgrade provides Beijing with a security foothold in Europe.—
Chris Massaro,
FOXNews.com,
25 Oct. 2025
Noun
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With unpredictable twists and emotions running high, this Halloween is especially chaotic, and Mutable signs — Gemini, Virgo, Sagittarius and Pisces — can't imagine what's in store.—
Valerie Mesa,
PEOPLE,
31 Oct. 2025
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Front-foot defending and slick attacking interplay, especially on the left flank, has been the blueprint over the past few seasons, but there are signs of evolution.—
Chris Weatherspoon,
New York Times,
31 Oct. 2025
Cite this Entry
“Red lights.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20lights. Accessed 4 Nov. 2025.
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