mouth off

verb

To complain or otherwise express oneself in a loud, immoderate manner.

Similar
shoot one's mouth offrantjabberspoutrabbit onrave
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Meanings

verbmouth off (third-person singular simple present mouths off, present participle mouthing off, simple past and past participle mouthed off)

present singular third person mouths off · participle present mouthing off · participle past mouthed off · past mouthed off

  1. intransitiveslangTo complain or otherwise express oneself in a loud, immoderate manner.
  2. ambitransitiveslangTo talk impudently, especially to one's superior.

    And don't you mouth off to me, or I'm gonna slap you right in your penis.

    2008, “Play It Again, Brian”, in Family Guy, Herbert (actor)

Synonyms & antonyms

Similar
shoot one's mouth off

verbtalk in a noisy, excited, or declamatory manner

Similar
rantjabberspoutrabbit onrave
Broader
talkspeakutter
Also see
backchatbacktalkjabberrabbit onrantraveshoot off at the mouthshoot one's mouth offspout

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

From mouth + off.

Full word history & related roots →

Translations

Esperanto plendi
  • plendito complain or otherwise express oneself in a loud, immoderate manner
Finnish meuhkata, meuhkata
  • meuhkatato complain or otherwise express oneself in a loud, immoderate manner
  • meuhkatato talk impudently, especially to one's superior
French se plaindre
  • se plaindreto complain or otherwise express oneself in a loud, immoderate manner
Polish zrzędzić, jęczeć
  • zrzędzićto complain or otherwise express oneself in a loud, immoderate manner
  • jęczećto complain or otherwise express oneself in a loud, immoderate manner
  • pyskowaćto talk impudently, especially to one's superior
  • odpyskiwaćto talk impudently, especially to one's superior
  • odpyskowywaćto talk impudently, especially to one's superior
  • odpyskowaćto talk impudently, especially to one's superior
  • odszczekiwaćto talk impudently, especially to one's superior
  • odszczekaćto talk impudently, especially to one's superior
Russian распускать язык, дерзить
  • распускать язык (raspuskatʹ jazyk)to complain or otherwise express oneself in a loud, immoderate manner
  • дерзить (derzitʹ)to talk impudently, especially to one's superior
Cite this entry
APA

mouth off. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/mouth%20off

MLA

“mouth off.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mouth%20off. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “mouth off,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/mouth%20off.

Source: mouth off on Wiktionary, CC BY-SA 4.0.