Definitions

dangerous

[deyn-jer-uhs, deynj-ruhs] / ˈdeɪn dʒər əs, ˈdeɪndʒ rəs /

ADJECTIVE

hazardous, troubling

Synonyms

STRONGEST

alarming bad critical deadly fatal nasty perilous precarious risky serious terrible threatening treacherous ugly unhealthy unsafe unstable

STRONG

no-go

WEAK

breakneck chancy dangersome delicate dynamite exposed formidable hairy heavy hot impending impregnable insecure jeopardous loaded malignant menacing mortal on collision course parlous portentous pressing queasy serpentine shaky speculative thorny ticklish touch-and-go touchy urgent viperous vulnerable wicked

Antonyms

STRONGEST

OK agreeable certain good great happy harmless healthful healthy honest kind nice pleasant pleasing safe secure stable strong sure trivial true unimportant wholesome wonderful

WEAK

careful guarded unhazardous untroubled

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.

Dangerous conditions are expected to continue along Southern California beaches this week, with officials warning swimmers to be mindful of life-threatening rip tides and sneaker waves that could catch beachgoers off guard.

From Los Angeles Times • Jun. 15, 2026

According to the charity Born Free, in 2023 there were 2,700 wild animals being kept privately in Great Britain under licences permitted by the Dangerous Wild Animals Act 1976.

From BBC • Feb. 26, 2026

And in a class titled “Free Speech and Dangerous Ideas,” where exclusively controversial topics are discussed, the professor turned the microphone over to his students and didn’t interfere once, according to Chancellor Daniel Diermeier.

From The Wall Street Journal • Oct. 16, 2025

We spent a day among fans at Chappell Roan’s ‘Visions of Damsels & Other Dangerous Things’ pop-up concert at Brookside at the Rose Bowl.

From Los Angeles Times • Oct. 14, 2025

“Now wait a minute, young lady. Annabeth is my daughter. Dangerous or not, I... I can’t just—” “Snacks,” Mrs. Chase announced.

From "The Titan's Curse" by Rick Riordan

Vocabulary lists containing dangerous

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