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.

But I say, ‘I don’t mind stepping into the dangerous places. I don’t mind failing or exploring publicly.’

From Los Angeles Times • Apr. 22, 2026

Anthropic’s Mythos AI model, deemed too dangerous for public release, initially caused cybersecurity stocks to fall.

From Barron's • Apr. 21, 2026

The mites also spread dangerous viruses such as Deformed Wing Virus and Acute Bee Paralysis Virus by injecting them directly into a bee's bloodstream.

From Science Daily • Apr. 20, 2026

But Dressel wants to hold Bayer accountable and for the company to admit that it marketed a potentially dangerous product.

From The Wall Street Journal • Apr. 20, 2026

In our encyclopedia, I researched the most dangerous and deadly things in the universe, and I brought them to our valley.

From "Ida B" by Katherine Hannigan

Vocabulary lists containing dangerous

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