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.

Anthropic found that the model engaged in a behavior called “alignment faking” — deliberately disguising its true reasoning and dangerous capabilities to avoid being restricted by people.

From MarketWatch • Apr. 18, 2026

After ChatGPT launched in late 2022, a wave of proposals assailed open development as dangerous.

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

And numerous investigations by the consumer association Which? have found dangerous products listed on online marketplaces.

From BBC • Apr. 15, 2026

Others thought it dangerous to disobey the dead.

From "American Spirits" by Barb Rosenstock

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