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.

Scientists say once warming passes 1.5C, dangerous impacts become more likely and harder to reverse.

From BBC • Apr. 24, 2026

But there is a fine and dangerous line with mandated treatment and shelter requirements that is often pushed further and further to the side in favor of the clean, safe streets argument.

From Los Angeles Times • Apr. 23, 2026

“It is very dangerous when two parts of our government are working at cross-purposes, and it’s got to change,” he said.

From The Wall Street Journal • Apr. 21, 2026

The hot topic in cybersecurity has been Anthropic’s Mythos AI model—which is supposedly so capable that the company has deemed it too dangerous to release to the public and is restricted to corporate previews.

From Barron's • Apr. 21, 2026

“There are strange days ahead. The most dangerous human talent is forgetting.”

From "Impossible Creatures" by Katherine Rundell

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