as in poisonous
containing or contaminated with a substance capable of injuring or killing a living thing
certain plants are toxic if eaten
Synonyms & Similar Words
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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
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
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Recent Examples of toxic
Madeline Gunderson,
USA Today,
26 June 2026
The center also cautions that a reishi extract was found to have toxic effects in leukocytes, and gastrointestinal cancer patients had higher levels of the serum tumor marker CA72-4 after taking reishi spore supplements.
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Samantha Agate,
Miami Herald,
26 June 2026
Chloe Laws,
Condé Nast Traveler,
23 Jan. 2026
The Michigan Legislature passed a law in 2008 meant to protect the public from harmful electronic waste toxics.
—
Nushrat Rahman,
Freep.com,
27 Dec. 2025
See All Example Sentences for toxic
Adjective
Its important to make sure that your dog doesn't eat any green parts of the tomato plant, which contains a toxic substance called solanine.
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Madeline Gunderson,
USA Today,
26 June 2026
The center also cautions that a reishi extract was found to have toxic effects in leukocytes, and gastrointestinal cancer patients had higher levels of the serum tumor marker CA72-4 after taking reishi spore supplements.
—
Samantha Agate,
Miami Herald,
26 June 2026
Noun
Taking supporting women’s wrongs—and rights—to new levels, everyone’s favorite toxic on-screen Girl Boss duo are back for a fourth season of Industry: Harper Stern and Yasmin Kara-Hanani.
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Chloe Laws,
Condé Nast Traveler,
23 Jan. 2026
The Michigan Legislature passed a law in 2008 meant to protect the public from harmful electronic waste toxics.
—
Nushrat Rahman,
Freep.com,
27 Dec. 2025
See All Example Sentences for toxic
Recent Examples of Synonyms for toxic
Adjective
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The cane toad, also known as the bufo toad or the marine toad, is known for the large, poisonous glands behind its eyes that secrete toxins when it’s touched.
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Berlin — Authorities across Germany have been battling an aggressive outbreak of poisonous caterpillars, which can cause severe health issues and have led to the closure of parks and other outdoor spaces, including in Berlin.
Noun
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That second episode was The Lion and the Rose, Joffrey and Margaery’s poison-interrupted wedding.
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Rather than relying solely on poison, the researchers recommend combining multiple control methods, including sealing entry points, improving sanitation, removing food sources and using traps.
Noun
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The shipment includes emergency health kits for urgent medical care, including supplies for safe births, newborn care, disease prevention and treatment, according to the United Nations.
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The rabies vaccine, if administered immediately after exposure, is nearly 100% successful at preventing the disease, according to the World Health Organization.
Noun
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Their use may last seconds, but the plastic and its toxins live well beyond us.
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Patients might be women in their 30s with an autoimmune disease like lupus or people of any age exposed to such toxins as methamphetamines or, in the past, the fen-phen appetite suppressant drug of the 1990s, later withdrawn after being linked to heart disease.
Cite this Entry
“Toxic.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/toxic. Accessed 1 Jul. 2026.
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