Definitions

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.

“At this stage, it is too early to say whether the current escalation marks a full resumption of hostilities or a dangerous but still containable episode,” Rystad Energy’s Jorge Leon said in an email.

From The Wall Street Journal • Jun. 11, 2026

It went on to warn that "a resumption of hostilities would be dangerous and would have serious regional consequences".

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

A 73-year-old man has been arrested on suspicion of causing death by dangerous driving and released on bail.

From BBC • Jun. 11, 2026

"You certainly did. We all need to be reminded about how dangerous fire can be, right?"

From "All About Sam" by Lois Lowry

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