dangerous

[deyn-jer-uhs, deynj-ruhs] / ˈdeɪn dʒər əs, ˈdeɪndʒ rəs /

ADJECTIVE

hazardous, troubling

Synonyms

STRONGEST

alarming bad critical deadly fatal nasty perilous precarious risky serious terrible threatening treacherous ugly unhealthy unsafe unstable

STRONG

no-go

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

The suit says it seeks to protect Floridians from OpenAI’s conduct and mitigate what it describes as a dangerous public nuisance.

From The Wall Street Journal • Jun. 1, 2026

The threat posed by drones goes beyond someone who intends to do harm — even hobbyists can be dangerous.

From Los Angeles Times • Jun. 1, 2026

Fans love clocking their samples from kung fu movies, shouting out “Tiger style!” from “Executioners from Shaolin,” or the definitive quote about Shaolin shadowboxing teaming up with the Wu-Tang sword style: It could be dangerous!

From Salon • May 31, 2026

"The Mountain is a dangerous place. A place to fear. You should take nothing for granted."

From "Rowan of Rin" by Emily Rodda

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