poison-pen letter
noun
a letter written in malice, usually anonymously, and intended to abuse, frighten, or insult the recipient
Words nearby poison-pen letter
poison pill,
poison sumac,
poison sumach,
poison-arrow frog,
poison-pen,
poison-pen letter,
poisoning,
poisonous,
poisonwood,
poisson,
poisson distribution
Idioms and Phrases with poison-pen letter
poison-pen letter
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 they said they couldn't pursue the matter. [Early 1900s]