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 mere possibility makes betting against him dangerous.

From The Wall Street Journal • Jun. 7, 2026

“It can be a very dangerous situation,” Trudeau said.

From Los Angeles Times • Jun. 6, 2026

They point to climate change, aging water infrastructure, and weak monitoring systems as factors that could allow dangerous amoebae to spread and become harder to control.

From Science Daily • Jun. 6, 2026

The Canaries -- Spanish islands off the coast of west Africa -- have become the main entry point for irregular migrants into Spain after long and dangerous trips from Africa.

From Barron's • Jun. 6, 2026

“I was mad that it killed people. I was mad that it was so ugly and dirty … I was mad at how dangerous it was.”

From "Mountain of Fire" by Rebecca E. F. Barone

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