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Definitions

hazardous

[haz-er-duhs] / ˈhæz ər dəs /


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.

“Weather alerts are intended to raise awareness of hazardous conditions, while emergency alerts issued by local authorities are used to communicate immediate protective actions tied to a specific incident,” the statement said.

From Los Angeles Times • Mar. 24, 2026

These gadgets could hunt for hazardous compounds like benzene or mold in home interiors, he says, or potential threats to first responders in wildfires or burning buildings.

From The Wall Street Journal • Mar. 17, 2026

"Over time, such a small change in an asteroid's motion can make the difference between a hazardous object hitting or missing our planet."

From Science Daily • Mar. 9, 2026

Esmaeil Baqaei, spokesman for the Iranian foreign ministry, said the strikes "are releasing hazardous materials and toxic substances into the air", which are "endangering lives on a massive scale".

From BBC • Mar. 8, 2026

The Humbug speculated on how he’d ever become involved in such a hazardous undertaking.

From "The Phantom Tollbooth" by Norton Juster