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
Synonyms & Similar Words
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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
Synonyms & Similar Words
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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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of noxious
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
In confidential reports submitted to NASA, flight crews describe being overwhelmed by noxious fumes — struggling to stay conscious, land planes safely, or simply breathe — part of a larger body of evidence suggesting that contaminated cabin air is a recurring threat.
—Charlotte Observer, 29 Oct. 2025
In Olympia, Riefenstahl translates these noxious ideas to film, almost verbatim.
—Sally Jenkins, The Atlantic, 27 Oct. 2025
See All Example Sentences for noxious
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
In confidential reports submitted to NASA, flight crews describe being overwhelmed by noxious fumes — struggling to stay conscious, land planes safely, or simply breathe — part of a larger body of evidence suggesting that contaminated cabin air is a recurring threat.
—Charlotte Observer, 29 Oct. 2025
In Olympia, Riefenstahl translates these noxious ideas to film, almost verbatim.
—Sally Jenkins, The Atlantic, 27 Oct. 2025
See All Example Sentences for noxious
Recent Examples of Synonyms for noxious
Adjective
-
The poisonous mushrooms can look and taste similar to edible ones.—
Tim Fang,
CBS News,
28 Jan. 2026
-
That provides them with some protection against eating the poisonous ones.—
Joan Morris,
Mercury News,
26 Jan. 2026
Adjective
-
While skepticism toward artificial intelligence is understandable, dismissing AI as inherently harmful overlooks both history and reality.—
Arkansas Online,
Arkansas Online,
27 Jan. 2026
-
Regulators will examine whether Grok is living up to its obligations under the Digital Services Act, the bloc’s wide-ranging rulebook for keeping internet users safe from harmful content and products.—
Kelvin Chan,
Chicago Tribune,
26 Jan. 2026
Adjective
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Hearing disgusting lies spread about my brother is absolutely gut-wrenching, and my family is deeply grateful so many people have stood up and helped tell his truth.—
Drake Bentley,
jsonline.com,
30 Jan. 2026
-
At one point a couple of years ago, Microsoft even used malware-like pop-ups in a disgusting overreach.—
Tom Warren,
The Verge,
29 Jan. 2026
Adjective
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But for decades, sections of it have been plagued by the dumping of toxic chemicals and untreated sewage.—
Rhea Mogul,
CNN Money,
1 Feb. 2026
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Obviously, the issue of toxic behavior on movie sets deserves to be talked about regardless of its impact on the awards race.—
Nate Jones,
Vulture,
31 Jan. 2026
Adjective
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More than a billion phones are now ineligible for security updates at a time when the threat landscape has never been more dangerous.—
Zak Doffman,
Forbes.com,
27 Jan. 2026
-
The church opened its warming center over the weekend, anticipating the arrival of the winter storm and the dangerous drop in temperatures.—
Leondra Head,
CBS News,
27 Jan. 2026
Adjective
-
Featuring the good, the bad and the ugly, ‘Look of the Week’ is a regular series dedicated to unpacking the most talked about outfit of the last seven days.—
Leah Dolan,
CNN Money,
29 Jan. 2026
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There are also two stepsisters, neither ugly but one quite bratty.—
Judy Berman,
Time,
29 Jan. 2026
Adjective
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The change comes amid concerns about fireworks causing unhealthful air.—
Rong-Gong Lin II,
Los Angeles Times,
19 June 2025
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Health professionals encourage people to use lean cuts of meat because most of the fat in animal products is unhealthful saturated fat, which can raise the risk of heart disease and cancer.—
Bethany Thayer,
Detroit Free Press,
22 June 2024
Adjective
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Affected cosmetics that are applied to the skin or eyes may lead to skin irritation, infection, or other adverse reactions.—
Michele Laufik,
Martha Stewart,
30 Jan. 2026
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Even for women whose initial mammograms didn’t show any calcium buildup and were considered low risk, risk of an adverse cardiac incident increased by 41% if buildup was detected on followups.—
Helen Carefoot,
Flow Space,
30 Jan. 2026
Cite this Entry
“Noxious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/noxious. Accessed 2 Feb. 2026.
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