red light

noun

Definition of red lightnext
as in warning
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

Recent Examples of Synonyms for red light
  1. warning
  2. red flag
  3. sign
Noun
  • Less pleading and more of a warning, Beyoncé’s version of the beloved hit features different lyrics and an introduction that directly references the original track.
    — Bailey Richards, PEOPLE, 1 Sep. 2026
  • The letter adds to a growing chorus of warnings about the dangers associated with advanced AI and comes shortly after a series of high-profile incidents in which flagship models tested by Anthropic and OpenAI breached testing safeguards.
    — Sam Meredith, CNBC, 31 Aug. 2026
Definition of warning
Noun
  • Naik flagged several red flags worth booking an appointment over.
    — Hanna Wickes, Fort Worth Star-Telegram, 28 Aug. 2026
  • Strong, erratic winds have made the going tough for fire crews, and red flag fire conditions are expected Friday.
    — Iris Kwok, Los Angeles Times, 28 Aug. 2026
Definition of red flag
Noun
  • But rather than placing a higher hurdle on the bill, the maneuver is considered a sign of its popularity as a temporary stopgap.
    — Bart Jansen, USA Today, 1 Sep. 2026
  • Mars in your sign challenges disciplined Saturn, creating the deeply irritating experience of feeling motivated and blocked at the same time.
    — Tarot.com, New York Daily News, 1 Sep. 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
See all Nearby Words

Cite this Entry

“Red light.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20light. Accessed 1 Sep. 2026.

Copy Citation
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Popular in Grammar & Usage

See More

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?

Why does English have so many silent letters?

7 Pairs of Commonly Confused Words
See More

Popular in Wordplay

See More

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of

Even More Words That Sound Like Insults But Aren't

Even More Bird Names that Sound Like Insults (and Sometimes Are)

12 Lovely and Unusual Words for the Natural World
See More

Popular

See More

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
skateboard-dog-hat
Wordmaxxing Slang Quiz Give your vocabulary a glow up by getting sendy w...
See All