TOXIN Synonyms: 23 Similar and Opposite Words

toxin

noun

ˈtäk-sən

Definition of toxin

as in poison

a substance that by chemical action can kill or injure a living thing read a pamphlet on the toxin responsible for botulism, a food poisoning that can cause paralysis and even death in some cases

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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 toxin Heat can act on a developing fetus much like a toxin, interfering with organ development early in pregnancy and with growth later on. — Catarina Rolfsdotter-Jansson, Forbes.com, 22 Aug. 2026 However, a cleanse is focused on consuming appropriate healthy foods, minerals and vitamins, while detoxes focus on removing toxins and refreshing the body. — Bestreviews, Chicago Tribune, 20 Aug. 2026 The nectar might contain some toxins, but the hummers and moths don’t drink enough to be harmed. — Joan Morris, Mercury News, 17 Aug. 2026 These include tenocytes [the primary component of tendons]; the cells that wrap around blood vessels and stabilize the circulatory system; the smooth muscle cells of the colon; and kidney epithelial cells, which filter toxins from the blood. — Ingrid Wickelgren, Quanta Magazine, 14 Aug. 2026 See All Example Sentences for toxin

Recent Examples of Synonyms for toxin

Noun

Liakopoulos cautions against using rodent poison to get rid of mice without the supervision of a pro.

— Emily Benda Gaylord, The Spruce, 28 Aug. 2026
Aquatic biologists will apply a piscicide, or an organic poison, to the waters to kill the brook trout.

— Logan Smith, CBS News, 24 Aug. 2026

Definition of poison

Noun

In late May, about 50,000 people in Orange County were evacuated because, at a Garden Grove site operated by GKN Aerospace, tanks holding a volatile hazardous chemical called methyl methacrylate were at risk of exploding or leaking toxics.

— Patt Morrison, Los Angeles Times, 15 July 2026
Munoz is an independent toxicologist working in collaboration with MAHA against pesticides and toxics.

— Sandee LaMotte, CNN Money, 10 July 2026

Definition of toxic

Noun

But rates of cardiac disease have fallen in recent years, as the medical community pivots to managing cholesterol levels, hypertension and diabetes—all risk factors for heart disease.

— Angelica Ang, Fortune, 26 Aug. 2026
The administration said 80% of insurers pledged changes to preauthorization requirements for 80% of diseases and injuries by January 2026.

— Stephanie Armour, CBS News, 25 Aug. 2026

Definition of disease

Browse Nearby Words

toxics

toxin

toxins

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“Toxin.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/toxin. Accessed 2 Sep. 2026.

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Synonyms of toxin

noun

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