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most dangerous

ADJECTIVE

hazardous, troubling

Synonyms

STRONGEST

alarming bad critical deadly fatal nasty perilous precarious risky serious terrible threatening treacherous ugly unhealthy unsafe unstable

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.

"This is the most dangerous period that I have known," Chief of the Defence Staff Sir Richard Knighton told BBC Radio 4's Today programme.

From BBC • Jun. 5, 2026

He’s a 10-time Pro Bowl selection whose moon ball is one of the prettiest, most dangerous downfield passes in league history.

From Los Angeles Times • Jun. 4, 2026

Bannon has called AI "the most dangerous technology in the history of mankind."

From Barron's • Jun. 2, 2026

His mother, whom J. Edgar Hoover would call “the most dangerous woman in America,” was born into a middle-class home and grew up in a suburb north of Milwaukee.

From The Wall Street Journal • May 29, 2026

My dear, war is upon us, and your mischief is most dangerous.

From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin