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
This Kidde portable carbon monoxide detector uses batteries and is compact enough to slip into your carry-on, giving you peace of mind that your hotel room or Airbnb is free of poisonous levels of carbon monoxide.
—
Amelia McBride, Travel + Leisure, 10 July 2025
In this story, money is framed as a poisonous substance, a mind virus.
—Dani Di Placido, Forbes.com, 10 July 2025
Knowing that he's developed a bond with Dr. Ochoa, Tessa stages a scene in which John Perry (Ian McQuown), a member of the network, attempts to kill Dr. Ochoa via one of Voit's favorite methods: a poisonous Sicarius spider dropped into her mouth.
—Randall Colburn, EW.com, 10 July 2025
An Australian woman was on Monday convicted of murdering three elderly relatives of her estranged husband with a meal laced with poisonous mushrooms, and attempting to murder a fourth, in a case that gripped the country.
—Reuters, NBC news, 7 July 2025
See All Example Sentences for poisonous
Amelia McBride, Travel + Leisure, 10 July 2025
In this story, money is framed as a poisonous substance, a mind virus.
—Dani Di Placido, Forbes.com, 10 July 2025
Knowing that he's developed a bond with Dr. Ochoa, Tessa stages a scene in which John Perry (Ian McQuown), a member of the network, attempts to kill Dr. Ochoa via one of Voit's favorite methods: a poisonous Sicarius spider dropped into her mouth.
—Randall Colburn, EW.com, 10 July 2025
An Australian woman was on Monday convicted of murdering three elderly relatives of her estranged husband with a meal laced with poisonous mushrooms, and attempting to murder a fourth, in a case that gripped the country.
—Reuters, NBC news, 7 July 2025
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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Evidence, while not conclusive, suggested the babies died from breathing in toxic black mold contaminating their homes due to water leaks.—
Matt Fuchs,
Time,
28 July 2025
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But too much of one specific type of algae can be toxic, causing a harmful algal bloom, also sometimes known as a red tide.—
Lex Harvey,
CNN Money,
26 July 2025
Adjective
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Here's what to do if a venomous snake bites you, according to a recent story from the Arizona Republic.—
Brandi D. Addison,
Austin American Statesman,
31 July 2025
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There are more than a dozen different species of venomous snakes in the state.—
Shelby Slade,
AZCentral.com,
24 July 2025
Cite this Entry
“Poisonous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/poisonous. Accessed 7 Aug. 2025.
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