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
Some have thorns or spines, others have poisonous leaves or berries, and still others have…elaborate chemical defense alarm systems?
—
Regina G. Barber, NPR, 3 June 2026
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
See All Example Sentences for poisonous
Regina G. Barber, NPR, 3 June 2026
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
See All Example Sentences for poisonous
Recent Examples of Synonyms for poisonous
Adjective
-
Power to the people is poison to the powerful.—
Sun Sentinel Editorial Board,
Sun Sentinel,
10 Feb. 2026
-
Dropped in recent years because carbs are poison.—
Fort Worth Star-Telegram,
Fort Worth Star-Telegram,
22 Jan. 2026
Adjective
-
Another toxic chemical crisis A massive fire at a Boyle Heights cold-storage warehouse triggered an ammonia leak, explosions and shelter-in-place orders across Eastside neighborhoods.—
Deputy Managing Editor,
Los Angeles Times,
20 June 2026
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The agency said no significant levels of toxic metals were observed.—
Sydney Barragan,
Daily News,
20 June 2026
Adjective
-
North Carolina is home to six types of venomous snakes; Germany has two.—
Eva Flowe
June 18,
Charlotte Observer,
18 June 2026
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The German Football Association told PEOPLE that the snake Kimmich spotted near a creek ended up being a non-venomous water snake.—
Bailey Richards,
PEOPLE,
17 June 2026
Cite this Entry
“Poisonous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/poisonous. Accessed 23 Jun. 2026.
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