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.

Countries have been wrestling with what to do with dangerous nuclear by-products since the first plants were built in the 1950s.

From Barron's • Jun. 1, 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

Jay Woods, chief strategist at Freedom Capital Markets, sees this as potentially dangerous for passive investors as well.

From Barron's • 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

Coal didn’t particularly want to be anywhere near Tom’s place right then, but he couldn’t think of another location that seemed more dangerous than an active construction site.

From "Boy 2.0" by Tracey Baptiste

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