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
Chlorine gas is poisonous and classified as a pulmonary irritant that has a distinct odor.
—
Angel Saunders, PEOPLE, 3 June 2026
There are poisonous mushrooms across California, according to the Midpeninsula Regional Open Space District in Los Altos.
—Sacbee.com, 1 June 2026
In mid-May, public health officials in Napa County said three people had been hospitalized after eating poisonous wild mushrooms foraged in the Deer Park community.
—Karen Garcia, Los Angeles Times, 30 May 2026
According to local media reports, Xu spent hundreds of thousands of yuan (tens of thousands of dollars) to buy highly toxic substances online, including alpha-amanitin, a lethal compound found in some poisonous mushrooms.
—CBS News, 27 May 2026
See All Example Sentences for poisonous
Angel Saunders, PEOPLE, 3 June 2026
There are poisonous mushrooms across California, according to the Midpeninsula Regional Open Space District in Los Altos.
—Sacbee.com, 1 June 2026
In mid-May, public health officials in Napa County said three people had been hospitalized after eating poisonous wild mushrooms foraged in the Deer Park community.
—Karen Garcia, Los Angeles Times, 30 May 2026
According to local media reports, Xu spent hundreds of thousands of yuan (tens of thousands of dollars) to buy highly toxic substances online, including alpha-amanitin, a lethal compound found in some poisonous mushrooms.
—CBS News, 27 May 2026
See All Example Sentences for poisonous
Recent Examples of Synonyms for poisonous
Adjective
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Power to the people is poison to the powerful.—
Sun Sentinel Editorial Board,
Sun Sentinel,
10 Feb. 2026
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Dropped in recent years because carbs are poison.—
Fort Worth Star-Telegram,
Fort Worth Star-Telegram,
22 Jan. 2026
Adjective
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All parts of the plant are toxic if eaten.—
Tim Johnson,
Chicago Tribune,
6 June 2026
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Prosecutors argued at trial that Shirilla drove into the building to end her toxic relationship with Russo, and that Flanagan was an unintended victim who happened to be in the car.—
Sarah Rumpf-Whitten,
FOXNews.com,
6 June 2026
Adjective
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But, Ricketts said, many people struggle identifying the difference — leading to unknowingly touching a venomous snake.—
Sophie Lindberg,
Kansas City Star,
10 June 2026
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Meet some of their favorite venomous and nonvenomous snakes, including recent rescues from the local reptile community.—
Ut Community Press,
San Diego Union-Tribune,
9 June 2026
Cite this Entry
“Poisonous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/poisonous. Accessed 14 Jun. 2026.
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