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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.

Here’s the uncomfortable truth about risk: It disappears from view exactly when it’s most dangerous.

From MarketWatch • Jun. 11, 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

"Melanoma, the most dangerous skin cancer, is now the fifth commonest cancer in the UK."

From BBC • May 26, 2026

“She’s the only female chieftain among the Tribes. One of the most dangerous women you’ll ever meet. Also one of the cleverest. Her tribe carries weapons to the Marinn branch of the Scholars’ Resistance.”

From "An Ember in the Ashes" by Sabaa Tahir