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
Relevance
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
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of noxious
End of Watch director David Ayer’s cynical brand of big-budget loud and stupid is just about as noxious as Snyder’s.
—
Tim Grierson, Vulture, 11 July 2025
Some of the noxious spray also hit the little girl in her face and arm.
—Roni Jacobson, New York Daily News, 27 June 2025
State law specifically names these three plants as noxious weeds:
Municipalities can add to this list based on recommendations from the Wisconsin Department of Natural Resources' invasive species list.
—Quinn Clark, jsonline.com, 25 July 2025
While seven out of 10 Indians are exposed to noxious air, pregnant women and their unborn children are among the most impacted.
—Anuradha Varanasi, Forbes.com, 23 July 2025
See All Example Sentences for noxious
Tim Grierson, Vulture, 11 July 2025
Some of the noxious spray also hit the little girl in her face and arm.
—Roni Jacobson, New York Daily News, 27 June 2025
State law specifically names these three plants as noxious weeds:
Municipalities can add to this list based on recommendations from the Wisconsin Department of Natural Resources' invasive species list.
—Quinn Clark, jsonline.com, 25 July 2025
While seven out of 10 Indians are exposed to noxious air, pregnant women and their unborn children are among the most impacted.
—Anuradha Varanasi, Forbes.com, 23 July 2025
See All Example Sentences for noxious
Recent Examples of Synonyms for noxious
Adjective
-
They are known to be foraging predators with tentacles that hold highly poisonous stinging cells, used for both hunting and self-defense, explains the Bureau of Ocean Energy Management.—
Ingrid Vasquez,
People.com,
22 Aug. 2025
-
This is provided by vast data centers that burn through energy at rates comparable to small nations, creating poisonous emissions and noise pollution.—
Bernard Marr,
Forbes.com,
18 Aug. 2025
Adjective
-
While some individuals and groups have called for a slower approach to gender-affirming care for minors, other pediatric gender care experts and advocates have said ending such care can have a harmful effect on patients' mental health and well-being.—
Mary Kekatos,
ABC News,
23 Aug. 2025
-
But over the past 50 years, ecologists have come to value wetlands not only as wildlife habitats but also as carbon sinks, defenses against rising seas, and filters for harmful pollutants.—
Kyra Morris,
The Atlantic,
22 Aug. 2025
Adjective
-
One of the guests makes a disgusting joke involving the boat and lubricant.—
Rafaela Bassili,
Vulture,
26 Aug. 2025
-
The show tells the story of Dexter Procter, a 10-year-old paediatrician and the world’s youngest-ever doctor trying to solve – frequently disgusting – medical mysteries, save his job, and find his place in the world.—
Jesse Whittock,
Deadline,
20 Aug. 2025
Adjective
-
To build psychological safety, Murali says leaders must actively challenge toxic patterns such as bias, bullying and poor management.—
Sally Percy,
Forbes.com,
21 Aug. 2025
-
An internal investigation by the company — just a single page buried in thousands of pages of state records — shows at least one toxic chemical spill has already occurred in the plant.—
Olivia Evans,
The Courier-Journal,
21 Aug. 2025
Adjective
-
Besides being a nuisance, mosquitoes can spread dangerous diseases.—
John Tufts,
IndyStar,
29 Aug. 2025
-
Fuller was initially charged with first-degree reckless homicide, but agreed to plead no contest to second-degree reckless homicide with a use of a dangerous weapon modifier.—
Drake Bentley,
jsonline.com,
29 Aug. 2025
Adjective
-
The stan fighting quickly turned ugly; a fan posted a racist meme of Huda as the police officer who murdered George Floyd, with Olandria’s face pasted on Floyd’s.—
Alejandra Gularte,
Vulture,
26 Aug. 2025
-
This obviously created some hard feelings and things got very ugly.—
R. Eric Thomas,
Chicago Tribune,
26 Aug. 2025
Adjective
-
The change comes amid concerns about fireworks causing unhealthful air.—
Rong-Gong Lin II,
Los Angeles Times,
19 June 2025
-
The unhealthful effects of autocracy remain robust even when accounting for economic differences and when excluding Venezuela and its collapsing health-care system.—
Thomas J. Bollyky,
Foreign Affairs,
30 Jan. 2020
Adjective
-
Those measures include safeguards from adverse effects of federal activities, restrictions on hunting or development, and active conservation plans like seed planting or captive rearing of animals.—
Eric Berger,
ArsTechnica,
28 Aug. 2025
-
Consumers who have experienced adverse reactions after using these products should report their symptoms and product use to their health care providers, the agency said.—
Adrienne Roberts,
Freep.com,
28 Aug. 2025
Cite this Entry
“Noxious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/noxious. Accessed 2 Sep. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share