hazardous
adjective
haz·ard·ous
ˈha-zər-dəs 
1
: involving or exposing one to risk (as of loss or harm)
a hazardous occupation
disposing of hazardous waste
2
: depending on the effect of unpredictable and unanalyzable forces in determining events : depending on hazard (see hazard entry 1 sense 2a) or chance
hazardous outcomes
hazardously
adverb
hazardousness
noun
Synonyms
Examples of hazardous in a Sentence
It was a hazardous voyage.
These are hazardous chemicals that can cause death if inhaled.
Recent Examples on the Web
Commuting can be hazardous, contributing to car accidents.
—
Steve Osler, Forbes, 5 Nov. 2024
The concern is not that the Ukrainian military would do something hazardous with loose nukes.
—William M. Moon, Foreign Affairs, 5 Nov. 2024
Severe thunderstorms were part of the hazardous weather advisory, too, that kicked off the week, with residents advised also to prepare for an elevated risk of tornadoes, flash floods and significant winds.
—Penny Weaver, arkansasonline.com, 5 Nov. 2024
Roads, especially bridges and overpasses, will become slick and hazardous, forecasters said in the advisories.
—Lauren Penington, The Denver Post, 29 Oct. 2024
See all Example Sentences for hazardous 
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Steve Osler, Forbes, 5 Nov. 2024
The concern is not that the Ukrainian military would do something hazardous with loose nukes.
—William M. Moon, Foreign Affairs, 5 Nov. 2024
Severe thunderstorms were part of the hazardous weather advisory, too, that kicked off the week, with residents advised also to prepare for an elevated risk of tornadoes, flash floods and significant winds.
—Penny Weaver, arkansasonline.com, 5 Nov. 2024
Roads, especially bridges and overpasses, will become slick and hazardous, forecasters said in the advisories.
—Lauren Penington, The Denver Post, 29 Oct. 2024
See all Example Sentences for hazardous
Dictionary Entries Near hazardous
Cite this Entry
“Hazardous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hazardous. Accessed 28 Nov. 2024.
Copy CitationKids Definition
hazardous
adjective
haz·ard·ous
ˈhaz-ərd-əs
hazardously
adverb
hazardousness
noun
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