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Definition of "poisonous" []

  • Capable of harming or killing by or as if by poison; toxic or venomous. (adjective)
  • Containing a poison. (adjective)
  • Marked by apparent ill will: "poisonous hate . . . in his eyes” ( Ernest Hemingway). (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "poisonous" in a sentence
  • ""To my thinking such teaching is not only erroneous, it is positively poisonous -- yes, _poisonous_!""
  • "Churkin, angrily denied what he called poisonous, unsourced reports on the Internet aimed at subverting Russia's relationship with Arab countries in the aftermath of the Security Council veto."
  • "I noticed something in the video that I've also noted elsewhere: When describing the scorpion the Japanese commentator uses the English word "poisonous"."