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
Heavy rain prompts traffic advisory on eastbound US-50 East in Lenexa
A traffic advisory has been issued for hazardous driving conditions attributed to heavy rain on US-50 East between exit 222A and I-435 East.
—
Kansas City Star Bot, Kansas City Star, 1 July 2024
Crossings are fewer but still hazardous for those who make the journey
So far on the California border, there’s been a noticeable shift: up until last month, the San Diego sector had been the place with most undocumented migrant crossings.
—Jasmine Garsd, NPR, 27 June 2024
As of morning, most of the Lower Peninsula is covered in rain with hazardous weather expected throughout the state.
—Tanya Wildt, Detroit Free Press, 25 June 2024
Officials said the train comprised three locomotives and 149 freight rail cars, including 17 tank cars loaded with hazardous materials.
—Bill Hutchinson, ABC News, 25 June 2024
See all Example Sentences for hazardous 
Kansas City Star Bot, Kansas City Star, 1 July 2024
Crossings are fewer but still hazardous for those who make the journey
So far on the California border, there’s been a noticeable shift: up until last month, the San Diego sector had been the place with most undocumented migrant crossings.
—Jasmine Garsd, NPR, 27 June 2024
As of morning, most of the Lower Peninsula is covered in rain with hazardous weather expected throughout the state.
—Tanya Wildt, Detroit Free Press, 25 June 2024
Officials said the train comprised three locomotives and 149 freight rail cars, including 17 tank cars loaded with hazardous materials.
—Bill Hutchinson, ABC News, 25 June 2024
See all Example Sentences for hazardous
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hazardous.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near hazardous
Cite this Entry
“Hazardous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hazardous. Accessed 7 Jul. 2024.
Copy CitationKids Definition
hazardous
adjective
haz·ard·ous
ˈhaz-ərd-əs
hazardously
adverb
hazardousness
noun
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