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.

Dangerous conditions are expected to continue along Southern California beaches this week, with officials warning swimmers to be mindful of life-threatening rip tides and sneaker waves that could catch beachgoers off guard.

From Los Angeles Times • Jun. 15, 2026

Dangerous talk, of course, but they're in decent fettle one week out from the biggest game of their international lives.

From BBC • Jun. 6, 2026

About one-third would likely consist of footage already shot, including performances from the 1990s Dangerous tour and the 2000s Invincible tour, Fogelson and King said.

From The Wall Street Journal • Apr. 22, 2026

The former Prime Minister Boris Johnson wrote in a newspaper column, after leaving office, that the original Dangerous Dogs Act had been "rushed through Parliament and has gone down as a model of atrocious legislation".

From BBC • Oct. 7, 2025

We have decided to uphold the official complaint of Mr. Lucius Malfoy, and this matter will therefore be taken to the Committee for the Disposal of Dangerous Creatures.

From "Harry Potter And The Prisoner Of Azkaban" by J.K. Rowling

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