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.

This is a cabined program that simply says: We’re not yet sending you back to a country that’s objectively dangerous.

From Slate • Jun. 25, 2026

The earthquakes that struck Venezuela on Wednesday night were a dangerous two-punch combination known as a doublet, collapsing buildings in Caracas and raising fears for the fate of the population in the worst-affected areas.

From The Wall Street Journal • Jun. 25, 2026

"Alligator Alcatraz fulfilled the role that it was designed to serve," DeSantis said, adding that it had helped remove "many, many dangerous people" from Florida and the United States.

From Barron's • Jun. 25, 2026

As forecasts predict dangerous heat levels, the paper summarises: "hundreds of schools close to cope", "high humidity adds to discomfort", and "do not travel warnings on railways".

From BBC • Jun. 24, 2026

The diary is precious to him, but it is also dangerous.

From "At Last She Stood" by Erin Entrada Kelly

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