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.

Interactions with another species can be beneficial, but they can also be dangerous.

From Science Daily • Jun. 20, 2026

"They risked their safety in a very dangerous and very volatile situation - I commend them for their dedication to duty."

From BBC • Jun. 19, 2026

Doctors warn that measles is especially dangerous for babies who are too young to be vaccinated.

From Los Angeles Times • Jun. 19, 2026

"The ground there is cracked, and the cracks are long. That is why this area would be very dangerous if another earthquake as strong follows," he said.

From Barron's • Jun. 19, 2026

It was strange feeling that this thing that we were inside was so dangerous we couldn’t even say the word out loud.

From "Code Name Kingfisher" by Liz Kessler

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