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.

Dermatologists have long cautioned that indoor tanning lamps are no less dangerous, since they expose users to ultraviolet light at concentrations far above natural sunlight.

From Los Angeles Times • May 6, 2026

Without insulin, the body cannot properly absorb glucose from the bloodstream, leading to dangerous blood sugar levels.

From Science Daily • May 6, 2026

The Chamber of Secrets plunges Harry and his friends deeper into the dark mysteries of Hogwarts in their second year, bringing them face to face with dangerous creatures and old enemies.

From BBC • May 6, 2026

Banks lend to the private-credit market in at least seven ways, and there can be a dangerous layering effect, the Financial Stability Board, an international group of financial regulators, said in a report Wednesday.

From The Wall Street Journal • May 6, 2026

It was strange feeling that this thing that we were inside was so dangerous we couldn’t even say the word out loud.

From "Code Name Kingfisher" by Liz Kessler

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