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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.

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

From Barron's • Jun. 2, 2026

"Clinical trials generally identify the most dangerous side effects of drugs," says Ungar.

From Science Daily • May 24, 2026

KAMPALA, Uganda—Health officials are rushing to contain a deadly Ebola outbreak in what is already one of the most dangerous corners of the world.

From The Wall Street Journal • May 19, 2026

“Extreme heat is one of Los Angeles’ most dangerous climate hazards, and it will only become more severe without urgent action,” said spokesperson Paige Sterling.

From Los Angeles Times • May 12, 2026

Duane was exposed and vulnerable to a most dangerous situation.

From "The Very, Very Far North" by Dan Bar-el