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.

Bannon has called AI "the most dangerous technology in the history of mankind."

From Barron's • Jun. 2, 2026

He said: "I wasn't very impressed. It was unbelievably reckless and dangerous …the speed they were travelling, the blind corner, the time of day. Everything about it."

From BBC • Jun. 1, 2026

The suit alleges that OpenAI marketed ChatGPT as reliable despite its tendency to sometimes generate dangerous misinformation.

From The Wall Street Journal • Jun. 1, 2026

Pelley holds especially high stature at the network because of his work over the years in dangerous war zones.

From Los Angeles Times • Jun. 1, 2026

“Come, let’s get back before we are found. Humans can be just as dangerous, and I do not have an enchantment to make me invisible.”

From "The Way to Rio Luna" by Zoraida Cordova

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!