RED LIGHT Synonyms: 28 Similar and Opposite Words

red light

noun

Definition of red light

as in warning

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 Synonyms for red light

Noun

Importantly, such forecasts give countries early warning of heat waves, droughts, floods and potential disruptions to food supplies, among other outcomes.

— Andrew Freedman, CNN Money, 4 Aug. 2026
Delivery of extreme heat warnings by text message, robocall, email, social media and Notify ATL, the city’s emergency mass notification system.

— Drew Kann, AJC.com, 4 Aug. 2026

Definition of warning

Noun

Hints of trouble began even before the prenuptial agreement was proposed, but certainly James’ last-minute change in the draft prenup was a huge red flag.

— Margery A. Greenberg, New York Daily News, 1 Aug. 2026
One error in a client deck sends up a red flag and can change the way work is perceived instantly.

— Julien Villemonteix, Forbes.com, 31 July 2026

Definition of red flag

Noun

In an independent third-party clinical study of 33 participants, 100 percent showed improvement across seven key signs of lip aging after just one use, while 96 percent demonstrated enhanced lip volume after four weeks.

— Kathryn Hopkins, Footwear News, 4 Aug. 2026
Video from his dash camera shows the aircraft gliding under a highway sign, missing it by mere feet, before touching down in the empty lanes.

— Aaron Cooper, CNN Money, 4 Aug. 2026

Definition of sign

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redivisions

red light

red lights

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“Red light.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20light. Accessed 7 Aug. 2026.

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Synonyms of red light

noun

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