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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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 toxin His owner, 25-year-old Caitlin Roberts, told the BBC that the plant toxins temporarily stopped Cooper’s intestines from working. — Ryan Brennan, Fort Worth Star-Telegram, 15 July 2026 These include promoting blood flow, reducing inflammation, and avoiding toxins like alcohol and drugs. — Angelica Stabile, FOXNews.com, 14 July 2026 Staff at Crown Vets in nearby Fort William hooked Tokyo up to an IV infusion and gave her activated charcoal, which works by absorbing the toxins. — Lianne Kolirin, CNN Money, 13 July 2026 Marijuana and other drugs entered the American Society for the Prevention of Cruelty to Animals top 10 list of toxins for pets for the first time in 2023. — ABC News, 13 July 2026 See All Example Sentences for toxin

Recent Examples of Synonyms for toxin

Noun

Someone on the way out steals that mask, leaving Juliette in danger of succumbing to the poison.

— Noel Murray, Vulture, 17 July 2026
Stone, who was not involved with the work, suggests that the brothers died because of malarial infection but that toxicological analyses would have to be done to know whether poison also played a role.

— Jacopo Prisco, CNN Money, 15 July 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

DeepMind’s AlphaFold, for example, has used to AI to make available new structures for more than 200 million proteins, opening new pathways for research into disease and medicine.

— Belonging Forum, Forbes.com, 22 July 2026
The lab got its start with studies of Rocky Mountain spotted fever in the 1900s, when ranchers and cattle were dying from the then-unknown disease.

— CNN Money, CNN Money, 22 July 2026

Definition of disease

Noun

Each venom is a unique cocktail of peptides and proteins that can cause muscular paralysis, tissue destruction, cardiac arrest, or other effects.

— Steve Midway, STAT, 16 July 2026
Given the absence of venom, the researchers propose that these arachnids likely use strong raptorial pedipalps (claw-like appendages).

— Jay Kakade July 13, New Atlas, 14 July 2026

Definition of venom

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toxics

toxin

toxins

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“Toxin.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/toxin. Accessed 26 Jul. 2026.

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Synonyms of toxin

noun

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