as in poisoned
containing or contaminated with a substance capable of injuring or killing a living thing
some evil person was leaving out poisonous meat for neighborhood dogs to eat
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Recent Examples of poisonous
Despite its reputation for being poisonous, popular poinsettia (Euphorbia pulcherrima) has only mild effects if nibbled, the ASPCA says.
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Erica Browne Grivas, Better Homes & Gardens, 24 Nov. 2024
The plot is this: To stop a witness from testifying against him, a gangster stows away poisonous snakes in the cargo hold of a plane on which the witness is traveling.
—Mark Oppenheimer, The Hollywood Reporter, 25 Oct. 2024
Comfort can lull us into a sense of dull complacency, and fear comes in the form of a poisonous bouquet of toxicity that paralyzes us.
—Cherie Kloss, Forbes, 23 Oct. 2024
When cleaning mold spots, never mix bleach with ammonia or other cleaners, the agency warned, as this will produce a poisonous gas.
—Angelica Stabile, Fox News, 2 Oct. 2024
See all Example Sentences for poisonous 
Erica Browne Grivas, Better Homes & Gardens, 24 Nov. 2024
The plot is this: To stop a witness from testifying against him, a gangster stows away poisonous snakes in the cargo hold of a plane on which the witness is traveling.
—Mark Oppenheimer, The Hollywood Reporter, 25 Oct. 2024
Comfort can lull us into a sense of dull complacency, and fear comes in the form of a poisonous bouquet of toxicity that paralyzes us.
—Cherie Kloss, Forbes, 23 Oct. 2024
When cleaning mold spots, never mix bleach with ammonia or other cleaners, the agency warned, as this will produce a poisonous gas.
—Angelica Stabile, Fox News, 2 Oct. 2024
See all Example Sentences for poisonous
Recent Examples of Synonyms for poisonous
Adjective
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Behavior and reproduction Most frogs are nocturnal, but not poison frogs.National Geographic, National Geographic, 28 Feb. 2020
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Some farmers even intentionally poison cranes to stop them from foraging in their crops.National Geographic, National Geographic, 10 Feb. 2020
Adjective
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Russia has denied using any chemical weapons in Ukraine and, in turn, has accused Kyiv of using toxic agents in combat. Kirillov, who took his current job in 2017, was one of the most high-profile figures to level those accusations.Compiled byDemocrat-Gazette stafffrom wire reports, arkansasonline.com, 18 Dec. 2024
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One thoughtful response might turn a toxic detractor into a powerful promoter.Jodie Cook, Forbes, 18 Dec. 2024
Adjective
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At least one of the snakes that became loose was a small, highly venomous viper.Charna Flam, People.com, 28 Nov. 2024
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These predators - who are also prey to many animals, including sharks - are equipped with venomous barbs on their tails, used defensively against potential threats.Melissa Cristina Marquez, Forbes, 3 Nov. 2024
Thesaurus Entries Near poisonous
Cite this Entry
“Poisonous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/poisonous. Accessed 22 Dec. 2024.
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