y'all'dn't've

• y'all'd'nt've (proscribed)

From y'all (you + all) + 'd (would) + n't (not) + -'ve (have).

• (US) IPA^(key): /ˈjɔl.dən.təv/, [ˈjɔɫ.ᵈn̩.təv]
  • (cot–caught merger) IPA^(key): /ˈjɑl.dən.təv/, [ˈjɑɫ.ᵈn̩.təv]

• Audio:

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y'all'dn't've

1. (colloquial, nonstandard, humorous) Contraction of you all would not have.
   • 2021 May 24, @roebruh, Twitter‎^[1]:

     Yup. Like "If y'all'dn't've done that, we wouldn't be in this situation."

   • 2022 June 2, @CalumDotExe, Twitter‎^[2]:

     Y'all'dn't've liked me when I was younger

   • 2022 June 27, @tabatkins, Twitter‎^[3]:

     Y'all'dn't've understood unless y'all were from the south