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.

HAZARDOUS definition: full of risk; perilous; risky. See examples of hazardous used in a sentence.

1. to risk; to be prepared to do (something, the result of which is uncertain).

Add to word list dangerous and involving risk, especially to someone's health: hazardous industries / materials / substances (Definition of hazardous from the Cambridge Business English Dictionary © …

Something that is hazardous is dangerous, especially to people's health or safety. They have no way to dispose of the hazardous waste they produce.

Definition of hazardous adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Hazardous definition: Marked by danger; perilous.