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.

About one-third would likely consist of footage already shot, including performances from the 1990s Dangerous tour and the 2000s Invincible tour, Fogelson and King said.

From The Wall Street Journal • Apr. 22, 2026

The animals cannot be rehomed, explains Mrs Mansfield, with many requiring licences to keep them under the auspices of the Dangerous Wild Animals Act.

From BBC • Dec. 28, 2025

And in a class titled “Free Speech and Dangerous Ideas,” where exclusively controversial topics are discussed, the professor turned the microphone over to his students and didn’t interfere once, according to Chancellor Daniel Diermeier.

From The Wall Street Journal • Oct. 16, 2025

Trixie Mattel, the adored drag queen DJ, perhaps said it best during her set at Saturday’s installment of the “Visions of Damsels & Other Dangerous Things” tour.

From Los Angeles Times • Oct. 14, 2025

“Maybe you see something. Maybe I am”—she raised her hands slowly, pinched her fingers together in front of Peter’s face, then suddenly flicked them open—“boom! Dangerous, like that...no warning!”

From "Pax" by Sara Pennypacker

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