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.

Moving forward, Hultquist is concerned that more aggressive and dangerous actors will mass exploitation campaigns involving ransomware and extortion.

From MarketWatch • Apr. 18, 2026

They disdain raw milk as dangerous and ask instead that we appreciate the role of pasteurization and fortified bread, to name two examples, in reducing nutritional deficiencies and food-borne illnesses.

From The Wall Street Journal • Apr. 17, 2026

But a smaller group behaves in a very different way, and their actions can be far more dangerous.

From Science Daily • Apr. 17, 2026

McGuinness has also been charged with dangerous driving, the Met said.

From BBC • Apr. 17, 2026

The biggest, most dangerous thing I’ve ever done.

From "Code Name Kingfisher" by Liz Kessler

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