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

Like most expectant parents, Briana Faucette heard the typical warnings about sleepless nights.

— Roni Robbins, AJC.com, 20 July 2026
And now, those warnings have become reality, with the employees working to rein in a growing cyclospora outbreak in the Midwest, forced to do more with less.

— Blake Ellis, CNN Money, 20 July 2026

Definition of warning

Noun

The fact that Apple’s most affordable offerings aren’t eligible for the program is a huge red flag that Apple Upgrade isn’t in customers’ best financial interest.

— Bee Wertheimer, PC Magazine, 24 July 2026
The National Weather Service that day declared a red flag warning for that part of Northern California amid warm temperatures, very low humidities and strong winds.

— Rosalio Ahumada, Sacbee.com, 24 July 2026

Definition of red flag

Noun

Certain top players, including Alex de Minaur, opted out of the media boycott for Wimbledon, citing their appreciation of the prize money increase as a sign of progress.

— Matthew Futterman, New York Times, 21 July 2026
And the early signs of a smooth 2030 tournament hosting are not promising; the South Americans have been accused of both brutal tactics on the field and racist abuse by fans off it.

— Simon Chadwick, Forbes.com, 20 July 2026

Definition of sign

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.

Browse Nearby Words

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 27 Jul. 2026.

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Synonyms of red light

noun

Example Sentences

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