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.
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
The National Weather Service warned that the heat wave, in addition to bringing risks of heat stress, also will create hazardous conditions along rivers as rapid snowmelt causes rising water levels and swift currents.
From Los Angeles Times • Mar. 15, 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
In spring, ripened fruit littered the ground to make walking a hazardous, slippery adventure.
From "Warriors Don't Cry: A Searing Memoir of the Battle to Integrate Little Rock's Central High" by Melba Pattillo Beals
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.
