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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.

A fire investigation unit from the London Fire Brigade and the London Ambulance Service's hazardous area response team are also present at the scene.

From BBC • Apr. 17, 2026

The suit alleged the turbines emit pollution and hazardous chemicals that have been linked to increases in asthma, respiratory diseases, heart problems and certain cancers.

From The Wall Street Journal • Apr. 14, 2026

The memoir of a former New York City subway motorman details his hazardous workdays below the streets.

From The Wall Street Journal • Apr. 10, 2026

As of Wednesday morning, Chiang Mai's PM2.5 level, which refers to the concentration of tiny, hazardous particles smaller than 2.5 micrometres, was classified as "very unhealthy".

From BBC • Mar. 31, 2026

It was hazardous, but it was the only way to traverse an area both as Negro and white.

From "Black Like Me" by John Howard Griffin




Vocabulary lists containing hazardous