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.

But the most dangerous use of AI in warfare to date has been not as a targeting system, but as an accountability sink.

From Salon • Jun. 22, 2026

His pace in behind meant he was England's most dangerous attacker.

From BBC • Jun. 17, 2026

Since the Meat Wall first sprung up in English soccer two years ago, it has transformed corners, free-kicks and throw-ins—once viewed simply as ways to restart play—into some of the game’s most dangerous scoring opportunities.

From The Wall Street Journal • Jun. 15, 2026

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

From MarketWatch • Jun. 11, 2026

George Blake had become that most dangerous variety of spy: the double agent.

From "Spies: The Secret Showdown Between America and Russia" by Marc Favreau