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1. Dictionary

   poisonous

   /ˈpɔɪzənəs/

   adjective

   • 1. (of a substance or plant) causing or capable of causing death or illness if taken into the body: "poisonous chemicals" Similar toxicdeadlyfatallethalmortaldeath-dealingvirulentnoxiousenvironmentally unfriendlyOpposite harmlessnon-toxic
   • ▪ (of an animal) producing poison as a means of attacking enemies or prey; venomous: "a poisonous snake" Similar venomousdeadlyOpposite harmless
   • ▪ extremely unpleasant or malicious: "there was a poisonous atmosphere at the office" Similar maliciousmalevolenthostileviciousspitefulbittervenomousevil-intentionedill-naturedvindictivevengefulvitriolicrancorousmalignmalignantperniciousmeannastyharmfulhurtfulwoundingslanderouslibellousdefamatoryinformal:bitchycattyliterary:maleficmaleficentOpposite benevolent

   Derivatives

   • 1. poisonously adverb

   Scrabble Points: 11

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   More definitions, origin and scrabble points

2. www.merriam-webster.com › dictionary › poisonousPoisonous Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › poisonous

   • Cached

   1. : destructive, harmful. 2. a. : 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. 3. : spiteful, malicious. poisonously adverb. Synonyms. envenomed. poisoned. toxic. venomous.

3. dictionary.cambridge.org › english › poisonousPOISONOUS | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › english › poisonous

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   POISONOUS definition: 1. very harmful and able to cause illness or death: 2. A poisonous animal or insect uses poison in…. Learn more.

4. dictionary.cambridge.org › english › poisonousPOISONOUS | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › english › poisonous

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   POISONOUS meaning: 1. very harmful and able to cause illness or death: 2. A poisonous animal or insect uses poison in…. Learn more.

5. www.collinsdictionary.com › english › poisonousPOISONOUS definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › english › poisonous

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   Something that is poisonous will kill you or make you ill if you swallow or absorb it. All parts of the yew tree are poisonous, including the berries. ...a large cloud of poisonous gas.

6. www.vocabulary.com › dictionary › poisonousPoisonous - Definition, Meaning & Synonyms - Vocabulary.com

   www.vocabulary.com › dictionary › poisonous

   If something is poisonous, you'd better not eat, drink, inhale, or touch it: it will make you sick. Some poisonous materials can even kill you. Of course, this adjective is derived from the noun poison, which is a toxic substance. You can also calls things poisonous if they're harmful in less physical ways.

7. www.thefreedictionary.com › poisonousPoisonous - definition of poisonous by The Free Dictionary

   www.thefreedictionary.com › poisonous

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   1. a. Containing or being a poison: poisonous fumes. b. Capable of harming or killing by poison: poisonous tentacles. 2. a. Full of ill will; malicious or spiteful: a poisonous look. b. Harmful or destructive: a poisonous precedent. poi′son·ous·ly adv. poi′son·ous·ness n. American Heritage® Dictionary of the English Language, Fifth Edition.

8. www.oed.com › dictionary › poisonous_adjpoisonous adjective - Oxford English Dictionary

   www.oed.com › dictionary › poisonous_adj

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   There are four meanings listed in OED's entry for the adjective poisonous, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.