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.

"The currents, which can be dangerous here, swept them away," he added.

From BBC • Apr. 11, 2026

Navy with cheap drones and mines, the world will be a far more dangerous place.

From The Wall Street Journal • Apr. 10, 2026

DHS has boasted about instances when wellness checks reportedly helped a minor escape a dangerous living situation.

From Salon • Apr. 10, 2026

When the reopening sparked backlash from nearby residents over loud and dangerous driving, Baron used his platform in the car community to urge enthusiasts to drive safely and listen to residents’ concerns.

From Los Angeles Times • Apr. 9, 2026

‘Watch out for soldiers. And don’t go anywhere dangerous.’

From "Code Name Kingfisher" by Liz Kessler

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