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.

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

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

In a social media post at the time, he called for a "substantially enlarged and rebuilt" facility to house the country's most dangerous offenders.

From Barron's • Apr. 3, 2026

In our encyclopedia, I researched the most dangerous and deadly things in the universe, and I brought them to our valley.

From "Ida B" by Katherine Hannigan