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
Reduces emissions of hazardous volatile substances and decreases energy consumption in refinery plants.
—
Miami Herald, 6 June 2024
No hazardous substances were found, according to South Korea’s military.
—Hyung-Jin Kim, The Christian Science Monitor, 3 June 2024
The report also found the agency kept shoddy lease records, failed to complete annual inspections or collect rent and never took meaningful action after finding hazardous conditions at the site.
—Rachel Uranga, Los Angeles Times, 3 June 2024
Heavy rain prompts traffic advisory on eastbound I-35 in Olathe
A traffic warning has been issued for hazardous driving conditions due to heavy rain between 119th Street/Exit 220 and I-435/Exit 222 on I-35.
—Kansas City Star Bot, Kansas City Star, 31 May 2024
See all Example Sentences for hazardous 
Miami Herald, 6 June 2024
No hazardous substances were found, according to South Korea’s military.
—Hyung-Jin Kim, The Christian Science Monitor, 3 June 2024
The report also found the agency kept shoddy lease records, failed to complete annual inspections or collect rent and never took meaningful action after finding hazardous conditions at the site.
—Rachel Uranga, Los Angeles Times, 3 June 2024
Heavy rain prompts traffic advisory on eastbound I-35 in Olathe
A traffic warning has been issued for hazardous driving conditions due to heavy rain between 119th Street/Exit 220 and I-435/Exit 222 on I-35.
—Kansas City Star Bot, Kansas City Star, 31 May 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 11 Jun. 2024.
Copy CitationKids Definition
hazardous
adjective
haz·ard·ous
ˈhaz-ərd-əs
hazardously
adverb
hazardousness
noun
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