open one's big mouth

English

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Verb

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open one's big mouth (third-person singular simple present opens one's big mouth, present participle opening one's big mouth, simple past and past participle opened one's big mouth)

  1. (informal) To speak about things rashly or foolishly, when it would be better to stay silent.
    Grr, why do I always open my big mouth after doing something wrong?

Translations

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See also

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