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
The lagoon is the most biologically diverse estuary on the nation’s east coast, but the manatees, birds and fish that call it home are suffering dramatically from the death of seagrass and the abundance of noxious algae that thrive on polluted water.
—
Orlando Sentinel Editorial Board, The Orlando Sentinel, 11 Jan. 2026
Then she’s saddled with the noxious task of trying to convince Eleven (Millie Bobby Brown) to kill herself for the greater good, only to reverse course at the last second and save her?
—Ben Travers, IndieWire, 1 Jan. 2026
The friendly receptionist in the hotel listened to Vladimir Solovyov, a particularly noxious pro-war media personality and propagandist, all day.
—The New Yorker, New Yorker, 5 Dec. 2025
One of the most noxious ideas, which is gaining traction among some MAGA devotees, is the concept of Christian nationalism.
—Steven Greenhut, Oc Register, 5 Dec. 2025
See All Example Sentences for noxious
Orlando Sentinel Editorial Board, The Orlando Sentinel, 11 Jan. 2026
Then she’s saddled with the noxious task of trying to convince Eleven (Millie Bobby Brown) to kill herself for the greater good, only to reverse course at the last second and save her?
—Ben Travers, IndieWire, 1 Jan. 2026
The friendly receptionist in the hotel listened to Vladimir Solovyov, a particularly noxious pro-war media personality and propagandist, all day.
—The New Yorker, New Yorker, 5 Dec. 2025
One of the most noxious ideas, which is gaining traction among some MAGA devotees, is the concept of Christian nationalism.
—Steven Greenhut, Oc Register, 5 Dec. 2025
See All Example Sentences for noxious
Recent Examples of Synonyms for noxious
Adjective
-
All parts of delphinium plants are poisonous to humans and pets.—
Kim Toscano,
Southern Living,
17 Feb. 2026
-
This was always a question of what happens to this friend group when there’s a poisonous dynamic at the center?—
Emily Longeretta,
Variety,
17 Feb. 2026
Adjective
-
Ultimately, however, Kato said, the goal should not be to replace one plastic bead with a less harmful one.—
TRAVIS LOLLER,
Arkansas Online,
16 Feb. 2026
-
Keep an eye out for any legitimate potential problems, especially those involving money, but there’s no need to assume harmful intentions.—
Tarot.com,
Chicago Tribune,
16 Feb. 2026
Adjective
-
Just last week the president tweeted a vile and disgusting image of President Obama and First Lady Michelle Obama, and refuses to apologize.—
Literary Hub,
Literary Hub,
18 Feb. 2026
-
So the disgusting attempt to rewrite history – won’t help.—
Grace Gilson,
Sun Sentinel,
16 Feb. 2026
Adjective
-
The French mint reformulated its protective varnish after the European Union restricted chromium trioxide, a toxic chemical previously used to prevent corrosion.—
Eric Sullivan,
Scientific American,
21 Feb. 2026
-
The kind of quiet friction that slowly moves the nation forward can be as compelling to watch as the toxic clashes that have driven it back.—
Talya Zax,
The Atlantic,
21 Feb. 2026
Adjective
-
As Son combined with Denis Bouanga – MLS’ most dangerous attacker three years running – the club counted 19 of its last 22 regular-season goals (plus four of six in the postseason) thanks to them.—
Josh Gross,
Daily News,
17 Feb. 2026
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Ten manufacturers of ultraprocessed foods are also facing a lawsuit, filed in December by San Francisco City Attorney David Chiu, that alleges companies knowingly engineered and marketed addictive, dangerous products while hiding the risks and causing a public health crisis.—
Sarah Koch,
CBS News,
16 Feb. 2026
Adjective
-
In more ways than one, this war has mutated into an ugly numbers game.—
Matthew Chance,
CNN Money,
21 Feb. 2026
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The artist has described herself as a black hole where people can dump their feelings, but her music moves beyond ugly emotions toward catharsis.—
Sheldon Pearce,
New Yorker,
20 Feb. 2026
Adjective
-
The soil may contain pathogens, pesticides and other unhealthful things.—
Joan Morris,
Mercury News,
9 Feb. 2026
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The change comes amid concerns about fireworks causing unhealthful air.—
Rong-Gong Lin II,
Los Angeles Times,
19 June 2025
Adjective
-
There are various pieces of gear designed for skiing in adverse avalanche conditions, Antibus said.—
Don Sweeney,
Sacbee.com,
21 Feb. 2026
-
Just under 6% of the 3,770 cases the board closed in 2024 resulted in adverse public action, according to the board’s annual report.—
Amber Gaudet
Updated February 20,
Charlotte Observer,
20 Feb. 2026
Cite this Entry
“Noxious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/noxious. Accessed 24 Feb. 2026.
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