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.

The mites also spread dangerous viruses such as Deformed Wing Virus and Acute Bee Paralysis Virus by injecting them directly into a bee's bloodstream.

From Science Daily • Apr. 20, 2026

The campaign, which made Bukele hugely popular, has resulted in a dramatic decrease in crime, turning El Salvador from one of Latin America's most dangerous countries to one of its safest.

From Barron's • Apr. 20, 2026

And data analyses by ProPublica showed that sepsis rates and blood transfusions spiked among miscarrying women after the ban went into effect — an indicator of dangerous delays in care across the state.

From Salon • Apr. 20, 2026

"Thank God, no lives have been lost, but we cannot, and must not, wait for that to change before we understand just how dangerous this moment is for all of our society."

From BBC • Apr. 19, 2026

“Between the five of you not a single one thought that maybe this was too dangerous, that it would most likely backfire spectacularly.”

From "Boy 2.0" by Tracey Baptiste

Vocabulary lists containing dangerous

Words Every Pirate Should Know

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

"Volcano!"

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

"Brothers in Hope"

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!