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
Earlier this year while touring with AC/DC, the singer was bit by a poisonous spider.
—
Ralphie Aversa,
USA Today,
26 June 2026
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.
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Sophie Tanno,
CNN Money,
23 June 2026
Every part of the tree is poisonous, including the small round manchineel fruits, which are known to be fatal if ingested.
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Steve Bender,
Southern Living,
21 June 2026
Just last week, a 16-year-old carriage horse in Central Park named Deniz died after ingesting a poisonous plant.
—
Nicole Acevedo,
NBC news,
19 June 2026
See All Example Sentences for poisonous
Ralphie Aversa,
USA Today,
26 June 2026
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.
—
Sophie Tanno,
CNN Money,
23 June 2026
Every part of the tree is poisonous, including the small round manchineel fruits, which are known to be fatal if ingested.
—
Steve Bender,
Southern Living,
21 June 2026
Just last week, a 16-year-old carriage horse in Central Park named Deniz died after ingesting a poisonous plant.
—
Nicole Acevedo,
NBC news,
19 June 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.
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Dropped in recent years because carbs are poison.
Adjective
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Decomposing food can release hydrogen sulfide, a toxic gas synonymous with landfills and garbage.
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Low employee morale often grows from ongoing negative interactions and toxic workplace cultures.
Adjective
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The exhibit is in partnership with the Houston Museum of Natural Science and explores the hidden dangers of the natural world, such as poisonous, venomous, or toxic plants and animals.
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Harry's book 'Spare' was especially venomous toward the family and caused a lot of hurt.
Cite this Entry
“Poisonous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/poisonous. Accessed 5 Jul. 2026.
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