poison-pen

American  

[poi-zuhn-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 writer.

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Etymology

Origin of poison-pen

First recorded in 1910–15

Example Sentences

There’s no murder here, but someone is leaving poison-pen letters, repellent drawings and destructive wreckage around the campus; Harriet, drawn back for an alumni weekend, gets pulled into the mystery.

From Seattle Times • Nov. 15, 2019

In a secret location, the chairman of a panel called the 1922 Committee was collecting poison-pen letters from rebels within Mrs. May’s Conservative Party, calling for her to be removed as leader.

From New York Times • Nov. 17, 2018

They are accustomed to poison-pen letters, furious emails, and insults.

From Los Angeles Times • Jan. 7, 2015

The tragedy is, modern poison-pen campaigns simply lack charm.

From The Guardian • Jan. 30, 2011

The "poison-pen" puzzle hadn't been exactly easy to solve, and his visit to Washington, though brief, had been sufficiently long for him to absorb some of the nervous excitement which permeated the department.

From On Secret Service Detective-Mystery Stories Based on Real Cases Solved By Government Agents by Taft, William Nelson