warning sign

NOUN

sign of things to come

Synonyms

WEAK

danger sign foreshadowing handwriting on the wall harbinger portent prediction preindication premonition sign signal warning

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Looking at AMD’s daily chart, some things stand out that could be a warning sign.

From Barron's • May 14, 2026

The city's transformation can be read as a success story or a warning sign.

From BBC • May 12, 2026

Just a few years ago, an increase of that size would have been viewed as a warning sign for the economy.

From MarketWatch • May 7, 2026

Going to bed at different times each night during midlife could be a warning sign for future heart problems.

From Science Daily • May 5, 2026

I shouted, then walked off the way the warning sign pointed.

From "The Watsons Go to Birmingham" by Christopher Paul Curtis