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
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
Periods of intense snowfall are possible in parts of central and southern WY, leading to possibly hazardous travel at times.
—
Tommy Tuberville, Newsweek, 7 Mar. 2025
The salad bar did not have time labels for potentially hazardous foods kept out of temperature control.
—Camila Pedrosa, Sacramento Bee, 7 Mar. 2025
The hazardous conditions could impact the Monday morning commute.
—Southern California Weather Report, Orange County Register, 7 Mar. 2025
This may result in slick and hazardous driving conditions.
—Bay Area Weather Report, The Mercury News, 6 Mar. 2025
See All Example Sentences for hazardous
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Tommy Tuberville, Newsweek, 7 Mar. 2025
The salad bar did not have time labels for potentially hazardous foods kept out of temperature control.
—Camila Pedrosa, Sacramento Bee, 7 Mar. 2025
The hazardous conditions could impact the Monday morning commute.
—Southern California Weather Report, Orange County Register, 7 Mar. 2025
This may result in slick and hazardous driving conditions.
—Bay Area Weather Report, The Mercury News, 6 Mar. 2025
See All Example Sentences for hazardous
Cite this Entry
“Hazardous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hazardous. Accessed 12 Mar. 2025.
Copy CitationKids Definition
hazardous
adjective
haz·ard·ous
ˈhaz-ərd-əs
hazardously
adverb
hazardousness
noun
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