Badmouth

//ˈbæd.maʊθ// verb, slang

verb, slang ·Common ·High school level

Definitions

Verb
  1. 1
    To criticize or malign, especially unfairly or spitefully. informal, transitive

    "[…] those cross-Atlantic aficionados who persistently idolize the British theater and bad-mouth Broadway."

  2. 2
    speak unfavorably about wordnet

Example

More examples

"Ivan continued to badmouth Rima."

Etymology

Calque of a Mande term, perhaps Vai [Term?] or Mandinka [Term?], which entered English via Gullah [Term?]. Compare Japanese 悪口(わるぐち) (waruguchi, “badmouthing”), which is a compound of 悪(わる) (waru, “bad, wicked”) and 口(くち) (kuchi, “mouth”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.