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.

“If anyone asks: What is the most dangerous thing that could happen to Iran and the region?” he said.

From The Wall Street Journal • Apr. 15, 2026

The most dangerous band in Los Angeles has played a few dozen shows in its career.

From Los Angeles Times • Apr. 15, 2026

Chief of the Defence Staff Sir Richard Knighton said it was "probably the most dangerous time of the last 30 years".

From BBC • Apr. 13, 2026

In recent years, Ecuador has gone from being one of the safest countries in South America to one of the most dangerous.

From Salon • Mar. 31, 2026

Then he adds softly, "But in class, your idealism shows as well. Be careful of idealism, my boy, for idealism is the most dangerous doctrine of all."

From "The Boy Who Dared" by Susan Campbell Bartoletti