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.

He kept the U.S. out of any major war and developed a nuclear strategy that evolved from “massive retaliation” to a policy that recognized how an all-or-nothing approach to thermonuclear weapons would be too dangerous.

From The Wall Street Journal • Apr. 15, 2026

“The allegations being circulated on social media by Ruby Rose about Katy Perry are not only categorically false, they are dangerous reckless lies,” Perry’s rep said.

From Los Angeles Times • Apr. 15, 2026

The judge said Follows had been told about her then 16-year-old son's dangerous driving in the community but had "done nothing".

From BBC • Apr. 14, 2026

"The potentially dangerous harvester ants even permit the visitors to groom between their open jaws."

From Science Daily • Apr. 14, 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

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