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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.

Teams including the county’s bomb-sniffing-dog unit investigated and found no explosive devices or hazardous materials in the area, police said.

From The Wall Street Journal • Apr. 16, 2026

"Rivers that are normally completely frozen have overflowed where they hadn't historically," he told the BBC, causing layered, unstable ice sheets that are hazardous to travel over in winter months.

From BBC • Apr. 12, 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

The boldest still dropped a few lines into the river, though even that was hazardous; more remained tied up beneath Meereen’s walls of many-colored brick.

From "A Dance with Dragons" by George R. R. Martin




Vocabulary lists containing hazardous