poisonous

adjective
poi·​son·​ous | \ ˈpȯiz-nəs How to pronounce poisonous (audio) , ˈpȯi-zᵊn-əs \

Definition of poisonous

2a : having the properties or effects of poison poisonous gas
b : producing a toxic substance that causes injury or death when absorbed or ingested poisonous mushrooms also : venomous a poisonous spider

Other Words from poisonous

poisonously adverb

Synonyms & Antonyms for poisonous

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Examples of poisonous in a Sentence

Chocolate is poisonous to dogs. This species of spider is extremely poisonous.
Recent Examples on the Web The president, Janie Orlean (Meryl Streep), is a hack and a buffoon surrounded by many, none more poisonous than her high-ranking son, Jason (Jonah Hill in relentless insult-comic mode). Tribune News Service, cleveland, 10 Dec. 2021 Until then, Texan's can celebrate the state's new official 'shroom, which Schatz tells me isn't poisonous, but not entirely edible. Chron, 5 Aug. 2021 In 168 pages, New York Attorney General Letitia James captured a sexist American work culture that is as poisonous as ever. Esther Wang, The New Republic, 5 Aug. 2021 While the secretary of agriculture was charged with supporting American food producers, the head of the agency’s Bureau of Chemistry tracked tainted foods and pushed aggressively for poisonous and impure products to be removed from the market. Bernice Yeung, ProPublica, 23 Dec. 2021 The president, Janie Orlean (Meryl Streep), is a hack and a buffoon surrounded by many, none more poisonous than her high-ranking son, Jason (Jonah Hill in relentless insult-comic mode). Tribune News Service, cleveland, 10 Dec. 2021 The president, Janie Orlean (Meryl Streep), is a hack and a buffoon surrounded by many, none more poisonous than her high-ranking son, Jason (Jonah Hill in relentless insult-comic mode). Los Angeles Times, 7 Dec. 2021 Many of the pesticides that drug traffickers use, meanwhile, are so poisonous that they have been outlawed in the U.S. for decades. NBC News, 1 Dec. 2021 Many described a hostile and poisonous workplace that affected some employees’ mental health and prompted many of them to seek employment elsewhere. Kent Somers, The Arizona Republic, 4 Nov. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'poisonous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of poisonous

15th century, in the meaning defined at sense 2

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Time Traveler for poisonous

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The first known use of poisonous was in the 15th century

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Dictionary Entries Near poisonous

poison oak

poisonous

poison out

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Statistics for poisonous

Last Updated

15 Jan 2022

Cite this Entry

“Poisonous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/poisonous. Accessed 19 Jan. 2022.

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More Definitions for poisonous

poisonous

adjective

English Language Learners Definition of poisonous

: causing sickness or death by entering or touching the body : containing poison
: capable of putting poison into another animal's body by biting it
: very harmful or unpleasant

poisonous

adjective
poi·​son·​ous | \ ˈpȯi-zᵊn-əs How to pronounce poisonous (audio) \

Kids Definition of poisonous

: containing poison : having or causing an effect of poison poisonous mushrooms

poisonous

adjective
poi·​son·​ous | \ ˈpȯiz-nəs, -ᵊn-əs How to pronounce poisonous (audio) \

Medical Definition of poisonous

1 : having the properties or effects of poison poisonous gas
2 : producing a toxic substance that causes injury or death when absorbed or ingested poisonous frogs and plants also : venomous

More from Merriam-Webster on poisonous

Nglish: Translation of poisonous for Spanish Speakers

Britannica English: Translation of poisonous for Arabic Speakers

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