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.

Methyl methacrylate can easily evaporate and linger near the ground as a dangerous vapor, according to the U.S.

From Los Angeles Times • May 22, 2026

Nearly 1,600 people were charged with crimes associated with the riot, including about 175 charged with using a deadly or dangerous weapon or causing serious bodily injury to an officer, according to DoJ figures.

From BBC • May 22, 2026

“Oil shocks became dangerous when they collided with macro and financial stress already in place,” they wrote.

From MarketWatch • May 22, 2026

Health officials are rushing to contain a deadly Ebola outbreak in what is already one of the most dangerous corners of the world.

From The Wall Street Journal • May 22, 2026

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

From "Code Name Kingfisher" by Liz Kessler

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