run off at the mouth

verb

To talk excessively.

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Meanings

verbrun off at the mouth (third-person singular simple present runs off at the mouth, present participle running off at the mouth, simple past ran off at the mouth, past participle run off at the mouth)

present singular third person runs off at the mouth · participle present running off at the mouth · past ran off at the mouth · alternative run off one's mouth · alternative run one's mouth · alternative run one's mouth off

  1. derogatoryidiomaticTo talk excessively.
  2. derogatoryidiomaticTo speak in a disrespectful manner about another individual.

Synonyms & antonyms

Also see
shoot off at the mouth
Cite this entry
APA

run off at the mouth. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/run%20off%20at%20the%20mouth

MLA

“run off at the mouth.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/run%20off%20at%20the%20mouth. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “run off at the mouth,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/run%20off%20at%20the%20mouth.

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