opened one's big mouth

o·pened one's big mouth
/ˈəʊ̯.pənd ˌwʌnz bɪɡ‿maʊ̯θ/Canada, US/ˈoʊ̯.pənd ˌwʌnz bɪɡ‿maʊ̯θ/Australia/ˈəʉ̯.pənd ˌwɐnz bɪɡ‿mæɔ̯θ/New Zealand/ˈɐʉ̯.pənd ˌwɐnz bəɡ‿mæʊ̯θ/

A form of open one's big mouth — To speak about things rashly or foolishly, when it would be better to stay silent.

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Meanings

verb
  1. participlepastsimple past and past participle of open one's big mouth
Cite this entry
APA

opened one's big mouth. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/opened%20one's%20big%20mouth

MLA

“opened one's big mouth.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/opened%20one's%20big%20mouth. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “opened one's big mouth,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/opened%20one's%20big%20mouth.

Source: opened one's big mouth on Wiktionary, CC BY-SA 4.0.