as in poisonous
containing or contaminated with a substance capable of injuring or killing a living thing
certain plants are toxic if eaten
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Antonyms & Near Antonyms
as in poison
a substance that by chemical action can kill or injure a living thing
tested for toxics in the water supply
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of toxic
Leanne Miller, CNBC, 30 Jan. 2026
Do your part to stop pollution by bringing this toxic trash to the library.
—Sarah Z. Sleeper, San Diego Union-Tribune, 30 Jan. 2026
Noelle Phillips, Denver Post, 30 Sep. 2025
In 2023, 20 steel mills and coke plants nationwide emitted nearly 2.4 million pounds of air toxics, 289,722 tons of criteria air pollutants and 43.3 million metric tons of greenhouse gases, according to the study.
—Maya Wilkins, Chicago Tribune, 1 Sep. 2025
See All Example Sentences for toxic
Adjective
The function that that gene gains gives off this really toxic element of protein that slowly kills the nerves in her brain and kills the nerves in her whole body.
—Leanne Miller, CNBC, 30 Jan. 2026
Do your part to stop pollution by bringing this toxic trash to the library.
—Sarah Z. Sleeper, San Diego Union-Tribune, 30 Jan. 2026
Noun
Environmental advocates say the new regulation of air toxics, which was required under a 2022 bill called Public Protections From Toxic Air Contaminants, will make the state’s air cleaner and its people healthier.
—Noelle Phillips, Denver Post, 30 Sep. 2025
In 2023, 20 steel mills and coke plants nationwide emitted nearly 2.4 million pounds of air toxics, 289,722 tons of criteria air pollutants and 43.3 million metric tons of greenhouse gases, according to the study.
—Maya Wilkins, Chicago Tribune, 1 Sep. 2025
See All Example Sentences for toxic
Recent Examples of Synonyms for toxic
Adjective
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The poisonous mushrooms can look and taste similar to edible ones.—
Tim Fang,
CBS News,
28 Jan. 2026
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That provides them with some protection against eating the poisonous ones.—
Joan Morris,
Mercury News,
26 Jan. 2026
Noun
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Her study provided precise scientific rules for how air and poison interacted inside the filter, helping to improve gas mask technology.—
Natalia Sánchez Loayza,
Scientific American,
29 Jan. 2026
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The proceeds from the purchase will support an early childhood curriculum emphasizing altruism and empathy, designed to inoculate young minds against the dangers of extremism and hate before such poison can take root.—
Elliott Broidy,
Sun Sentinel,
27 Jan. 2026
Noun
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In those participants, the disease was not associated with any changes in brain size or evidence of damage.—
Melissa Rudy,
FOXNews.com,
29 Jan. 2026
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During an appearance on BBC Breakfast on Tuesday, Horton took the time to promote a charity seeking to raise funds for the organization Pancreatic Cancer UK, while also sharing a sweet tribute to the late Harry Potter star, who died from the disease in 2016 at age 69.—
Lauren Huff,
Entertainment Weekly,
28 Jan. 2026
Noun
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It was already known that charcoal could filter out toxins, trapping those toxic gas molecules on the surface of the charcoal.—
Natalia Sánchez Loayza,
Scientific American,
29 Jan. 2026
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These bags are made from food grade silicone that’s free from toxins like lead, latex, phthalates, BPA, and BPS.—
Alicia Geigel,
Southern Living,
27 Jan. 2026
Cite this Entry
“Toxic.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/toxic. Accessed 1 Feb. 2026.
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