[poi-zuh-nuh s] /ˈpɔɪ zə nəs/

full of or containing :
poisonous air; a poisonous substance.
harmful; destructive:
poisonous to animals; poisonous rumors.
deeply malicious; malevolent:
poisonous efforts.
having the effects or qualities of a poison
capable of killing or inflicting injury; venomous
corruptive or malicious

1570s, from poison (n.) + -ous. Failed 16c. rivals were poisonsome, poisonful, poisony. Earlier poisoned was used (late 15c.). Related: Poisonously; poisonousness.

poisonous poi·son·ous (poi’zə-nəs)
Relating to or caused by a poison.


Read Also:

  • Poison-pen

    [poi-zuh n-pen] /ˈpɔɪ zənˈpɛn/ adjective 1. composed or sent maliciously, as a letter, usually anonymously and for the purpose of damaging another’s reputation or happiness: The newspaper received a poison-pen letter alleging that the mayor was misusing city funds. 2. characterized by or given to the sending of poison-pen letters: a poison-pen campaign; a poison-pen […]

  • Poison-pen letter

    noun 1. a letter written in malice, usually anonymously, and intended to abuse, frighten, or insult the recipient noun phrase A malicious anonymous letter; an obscene crank letter (1929+) A letter, usually anonymous, that makes malicious statements about the recipient or a third party. For example, She told the police about the poison-pen letters, but […]

  • Poison-pill

    noun 1. a pellet of a quick-acting poison, as cyanide, for a spy to carry in order to commit suicide when faced with capture or torture. 2. Financial Slang. any of various business devices created to prevent a company from being taken over by another, as issuing a new class of stock or stock warrants […]

  • Poison-sumac

    noun 1. a shrub or small tree, Rhus vernix (or Toxicodendron vernix), of swampy areas of the eastern U.S., having pinnate leaves and causing severe dermatitis when touched by persons sensitive to it. poison sumac n. A swamp shrub of the southeast United States, having compound leaves and greenish-white berries and causing an itching rash […]

Disclaimer: Poisonous definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.