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.

Indeed, nostalgia has sometimes been a dangerous factor in California politics, unleashing the Spanish fantasy heritage movement, Prop.

From Los Angeles Times • May 15, 2026

The research helps fill important gaps in the history of solar activity and improves scientists' understanding of dangerous space weather events.

From Science Daily • May 14, 2026

The Quarantine and Biocontainment units not only protect patients but provide a place for doctors to learn more about new and dangerous pathogens.

From Slate • May 14, 2026

"We know when we're at it, we are a very dangerous team, a team that can win games and that's what we're going to do."

From BBC • May 14, 2026

He smiled, but it was a dangerous smile.

From "Found" by Margaret Peterson Haddix

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