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
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of red lights
The system enforces a state law requiring other vehicles to come to a complete stop when a school bus is stopped with its stop-arm extended and red lights flashing.
—
Karoline Leonard, Austin American Statesman, 23 Jan. 2026
The suspect ran through red lights and swerved across several lanes on Balboa Boulevard in Encino while driving at around 80 mph before merging onto the northbound 101 Freeway.
—Matthew Rodriguez, CBS News, 6 Jan. 2026
Federal regulators also have opened yet another investigation into Tesla’s self-driving feature after dozens of incidents in which the cars ran red lights or drove on the wrong side of the road, sometimes crashing into other vehicles and causing injuries.
—Sasha Rogelberg, Fortune, 2 Nov. 2025
If the emergency vehicle behind you has solid blue and red lights shining, the officer inside is patrolling the area and just wants to be visible.
—Miami Herald Archives, Miami Herald, 30 Oct. 2025
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
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
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
Karoline Leonard, Austin American Statesman, 23 Jan. 2026
The suspect ran through red lights and swerved across several lanes on Balboa Boulevard in Encino while driving at around 80 mph before merging onto the northbound 101 Freeway.
—Matthew Rodriguez, CBS News, 6 Jan. 2026
Federal regulators also have opened yet another investigation into Tesla’s self-driving feature after dozens of incidents in which the cars ran red lights or drove on the wrong side of the road, sometimes crashing into other vehicles and causing injuries.
—Sasha Rogelberg, Fortune, 2 Nov. 2025
If the emergency vehicle behind you has solid blue and red lights shining, the officer inside is patrolling the area and just wants to be visible.
—Miami Herald Archives, Miami Herald, 30 Oct. 2025
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
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
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
Recent Examples of Synonyms for red lights
Noun
-
And when red flags are ignored, fraud thrives.—
Jennifer Nassour,
Boston Herald,
27 Jan. 2026
-
That … definitely raised some red flags in my mind.—
Peter Van Sant,
CBS News,
27 Jan. 2026
Noun
-
My mom has canceled appointments after receiving such warnings.—
Laura Yuen,
Mercury News,
28 Jan. 2026
-
The lawsuit, filed in Los Angeles County Superior Court, claims Edison failed to follow its own safety protocols despite advance warnings of extremely dangerous red flag conditions in an area known to be at high threat of wildfires.—
Melody Petersen,
Los Angeles Times,
28 Jan. 2026
Noun
-
The girls seemed to be having a great time during these performances, interacting with fans by reacting to their costumes and signs, and creating a Candybong wave.—
Laura Sirikul,
Forbes.com,
27 Jan. 2026
-
Many marchers also referenced the killing of Renee Nicole Good, with signs honoring both victims and calling for accountability.—
Eva Andersen,
CBS News,
27 Jan. 2026
Cite this Entry
“Red lights.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20lights. Accessed 30 Jan. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
