1
as in poisonous
bad for the well-being of the body
mixing bleach and ammonia can cause noxious fumes that can seriously harm you
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Antonyms & Near Antonyms
2
as in harmful
causing or capable of causing harm
noxious smog that for years has been encrusting the historic cathedral with soot
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Antonyms & Near Antonyms
3
as in disgusting
causing intense displeasure, disgust, or resentment
the website reserved the right to remove and report hate speech and other noxious types of postings
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Example Sentences
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Recent Examples of noxious
But growing anything is considered a beneficial use as long as it’s planted, irrigated and not a native species or noxious weed.
—
Emily Cureton Cook,
ProPublica,
26 June 2026
The thick, noxious smoke billowing out of a Los Angeles warehouse has been a fixture of the city’s skyline for almost a week as crews race to contain a fire at a cold-storage facility holding 85 million pounds of frozen food.
—
Holly Yan,
CNN Money,
22 June 2026
This round-the-clock checking is especially helpful since noxious gases can leak from a number of places in a hotel room or Airbnb.
—
Olivia Young,
Travel + Leisure,
17 June 2026
The board said the crude oil spill caught little media attention, most likely because the media was consumed by a threat of explosion of noxious gas leaking from a chemical tank at the GKN Aerospace plant in Garden Grove that resulted in an evacuation of 50,000 people.
—
Steve Scauzillo,
Daily News,
9 June 2026
See All Example Sentences for noxious
Emily Cureton Cook,
ProPublica,
26 June 2026
The thick, noxious smoke billowing out of a Los Angeles warehouse has been a fixture of the city’s skyline for almost a week as crews race to contain a fire at a cold-storage facility holding 85 million pounds of frozen food.
—
Holly Yan,
CNN Money,
22 June 2026
This round-the-clock checking is especially helpful since noxious gases can leak from a number of places in a hotel room or Airbnb.
—
Olivia Young,
Travel + Leisure,
17 June 2026
The board said the crude oil spill caught little media attention, most likely because the media was consumed by a threat of explosion of noxious gas leaking from a chemical tank at the GKN Aerospace plant in Garden Grove that resulted in an evacuation of 50,000 people.
—
Steve Scauzillo,
Daily News,
9 June 2026
See All Example Sentences for noxious
Recent Examples of Synonyms for noxious
Adjective
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All of this played out against an increasingly poisonous political environment.
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Sago palm, oleander, foxglove, azaleas and lily of the valley are all common and all poisonous.
Adjective
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The plasma process also produced very little smoke or tar, reducing harmful secondary pollutants typically associated with biomass conversion and making the technology a cleaner way to produce renewable solid fuel.
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At the same time, its flowers attract beneficial predatory insects, such as ladybugs and parasitic wasps, that naturally hunt harmful garden pests.
Adjective
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Noah Kahan is speaking out about a disgusting habit picked up by some music fans.
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French broadcaster French Pierron was under fire for calling childbirth 'a disgusting moment.
Adjective
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Decomposing food can release hydrogen sulfide, a toxic gas synonymous with landfills and garbage.
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Low employee morale often grows from ongoing negative interactions and toxic workplace cultures.
Adjective
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Others develop dangerous fluctuations in blood pressure and abnormal heart rhythms because the autonomic nervous system becomes affected.
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Sometimes, the streets appear glittering; other times, seedy and dangerous.
Adjective
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Lasko’s teammate, Devin Taylor, was able to get up and field the rolling ball that split the two defenders, but Lasko stayed on the ground in what was a pretty ugly crash.
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His ability to perform a cesarean section — something Doc couldn't dream of — forces the town to reckon with an ugly part of their collective conscience.
Adjective
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From downtown Los Angeles to the San Gabriel Valley, tens of thousands were enveloped in unhealthful levels of smoke, even as some local officials told residents that the air posed no danger.
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The soil may contain pathogens, pesticides and other unhealthful things.
Adjective
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In pharmacogenomics, understanding how genes affect drug efficacy helps doctors prescribe the right drug at the optimal dose while reducing adverse reactions.
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Johnson was undone by revelations of his conduct during Covid lockdowns and Truss by the adverse market reaction to her 2022 mini-Budget.
Cite this Entry
“Noxious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/noxious. Accessed 5 Jul. 2026.
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