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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.

“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

His ability to accelerate attacks, create chances and decide matches has transformed Barcelona's right flank into the most dangerous outlet in Spain.

From BBC • May 11, 2026

They say that the four most dangerous words in investing are “this time is different,” but the way stocks react to scary news might really have changed.

From The Wall Street Journal • Apr. 20, 2026

Takeoff is among the most dangerous moments as missile alerts force passengers to sit tight.

From The Wall Street Journal • Apr. 10, 2026

It was the most dangerous thing she had ever said.

From "The Golden Compass" by Philip Pullman