We don't have synonyms for poison pen letter yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are poison-pen letter.
We don't have any synonyms for poison pen letter yet.
(n) :
Alternative form of poison-pen letter. [(idiomatic) A missive which is malicious, insulting, and/or defamatory toward a person, organization, or point of view, especially one which is unsigned.]
(n) :
Alternative form of poison-pen letter. [(idiomatic) A missive which is malicious, insulting, and/or defamatory toward a person, organization, or point of view, especially one which is unsigned.]