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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.

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

Many roads were blocked by trees overnight or restricted due to hazardous conditions, including the A8, A87 and A83.

From BBC • Apr. 5, 2026

The TSA screens passengers and luggage for hazardous items.

From BBC • Mar. 22, 2026

E-noses are being explored for medical diagnoses, such as detecting infections from breath, and for identifying hazardous compounds in environments.

From The Wall Street Journal • Mar. 17, 2026

It was bad form to cut loose in the middle, and then also perhaps hazardous; Jack had once told me no one had ever done that before to Dennis Hoagland.

From "Native Speaker" by Chang-rae Lee




Vocabulary lists containing hazardous