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.

"Although rescue isn't a core mission of the vessel, it was clearly good for a dirty, dangerous missions like this."

From BBC • Jun. 11, 2026

Others in AI research said that Anthropic, by admitting it was silently interfering with the model to make it less useful, was setting a dangerous precedent.

From The Wall Street Journal • Jun. 11, 2026

A mother and her two children were swept away into the ocean in Laguna Beach on Tuesday evening, and one of the children remains missing, after powerful waves created dangerous conditions, authorities said.

From Los Angeles Times • Jun. 10, 2026

Coal mines often leach dangerous chemicals like arsenic into waterways and are required to strictly monitor pollution discharge and keep it under certain limits.

From Salon • Jun. 10, 2026

On a desk in Las Vegas, film from infrared cameras revealing new, dangerous sources of heat coming from the bulge sat, unopened and unexamined.

From "Mountain of Fire" by Rebecca E. F. Barone

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