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.

Scientists warn that intensified melting inside the channels could create a dangerous feedback effect.

From Science Daily • May 10, 2026

Sabbir’s transmission drew a disheartening response: “The area,” an Iranian official explained to him, was “very dangerous and a red zone.”

From The Wall Street Journal • May 9, 2026

The Food and Drug Administration has repeatedly warned that unpasteurized dairy products can carry dangerous bacteria such as salmonella, listeria, and E. coli.

From Salon • May 9, 2026

"The virus is dangerous, of course. But they say you need to have very close contact to get it," Jennifer told me, out walking with her child in Tenerife's capital Santa Cruz.

From BBC • May 9, 2026

Tansy’s eyes closed to a pair of dangerous slits.

From "The Teacher’s Funeral" by Richard Peck

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