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.

Anthropic released Fable, a next-generation “Mythos-class” model to the general public with guardrails that remove dangerous capabilities earlier this week.

From The Wall Street Journal • Jun. 13, 2026

In his letter replying to John Healey's resignation, the prime minister wrote: "The world today is more dangerous and uncertain than at any point in our lifetimes".

From BBC • Jun. 12, 2026

In his letter, Healey said he was first given full sight of the DIP on Monday, revealing that it "falls well short of what is required for defence and the country at this dangerous time".

From Barron's • Jun. 11, 2026

A dangerous tapeworm that has been spreading across North America has now been detected in the Pacific Northwest, according to new research.

From Science Daily • Jun. 11, 2026

The way she calls my name makes my butterflies take up their flags, stand in a line like an army poised for battle — like what I’m about to walk into might be dangerous.

From "Red Flags and Butterflies" by Sheryl Azzam

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