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.

Earlier, Home Secretary Shabana Mahmood called out a "dangerous undercurrent" in reaction to crimes, which she says are leading to threats.

From BBC • Jun. 2, 2026

Countries have been wrestling with what to do with dangerous nuclear by-products since the first plants were built in the 1950s.

From Barron's • Jun. 1, 2026

The suit says it seeks to protect Floridians from OpenAI’s conduct and mitigate what it describes as a dangerous public nuisance.

From The Wall Street Journal • Jun. 1, 2026

Pelley holds especially high stature at the network because of his work over the years in dangerous war zones.

From Los Angeles Times • Jun. 1, 2026

He smiled, but it was a dangerous smile.

From "Found" by Margaret Peterson Haddix

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