Detroit Free Press on MSN: See drone footage of Cheboygan dam water rising to dangerous levels AOL: Dangerous Level 3 out of 5 severe weather threatens millions across East Coast Dangerous Level 3 out of 5 severe weather threatens millions across East Coast dangerous, hazardous, precarious, perilous, risky mean bringing or involving the chance of loss or injury. dangerous applies to something that may cause harm or loss unless dealt with carefully. Use the word dangerous to describe anything that can potentially cause serious harm, like a snarling pit bull or an icy, treacherous road.

Context Explanation

The earliest meaning of the word dangerous was "difficult or arrogant." DANGEROUS definition: 1. A dangerous person, animal, thing, or activity could harm you: 2. A dangerous person, animal…. Learn more.

Insight Material

Definition of dangerous adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. dan ger ous ly, adv. WordReference Random House Unabridged Dictionary of American English © 2026 dan ger ous (dān′ jər əs, dānj′ rəs), adj. full of danger or risk; causing danger; perilous; risky; hazardous; unsafe.

Final Conclusion

able or likely to cause physical injury: a dangerous criminal.