adjective
-
involving great risk
-
depending on chance
Other Word Forms
- hazardously adverb
- hazardousness noun
- nonhazardous adjective
- nonhazardously adverb
- nonhazardousness noun
- ultrahazardous adjective
- unhazardous adjective
- unhazardously adverb
Etymology
Origin of hazardous
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.
Army Corps of Engineers cleared nearly 9,700 properties of hazardous items and other fire debris in eight months, one of the fastest cleanups of its size in modern history.
From The Wall Street Journal • Apr. 2, 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
"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
Black smoke billowed over the Iranian capital, with officials there warning of the hazardous health effects for residents.
From Los Angeles Times • Mar. 8, 2026
After performing that hazardous job for a few years and setting some aviation records, her career options began to open up.
From "Women in Space" by Karen Bush Gibson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
