[poi-zuh-nuh s] /ˈpɔɪ zə nəs/
full of or containing :
poisonous air; a poisonous substance.
poisonous to animals; poisonous rumors.
deeply malicious; malevolent:
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.
[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 […]
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 […]
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 […]