from The American Heritage® Dictionary of the English Language, 4th Edition

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

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Containing sufficient poison to be dangerous
  • adj. Inedible due to containing poison; poisonous to eat

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having the qualities or effects of poison; venomous; baneful; corrupting; noxious.

from The Century Dictionary and Cyclopedia

  • Having the properties of a poison; containing poison; venomous; hence, corrupting, vitiating, or impairing.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. not safe to eat
  • adj. marked by deep ill will; deliberately harmful
  • adj. having the qualities or effects of a poison


From poison +‎ -ous (Wiktionary)



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