adjective

hazardous

hazardous, dangerous, risky

The factory produces hazardous waste.

The factory produces hazardous waste.

It was a hazardous journey through the mountains.

It was a hazardous journey through the mountains.

hazardous ((noun)) dangerous The factory produces hazardous waste.

Synonyms: dangerous, risky, perilous; Antonyms: safe, secure

From the noun 'hazard' plus the adjective-forming suffix '-ous', meaning 'full of'.

Something that is 'full of hazard' is hazardous.

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