I occasionally see 何言っとんだ? where I would expect 何言ってんだ? but I am not sure that とん comes from ておくの. I thought ん 縮約形 only occurred with ら行.

今さら、何言っとんだ? (source)

何言っとんだ。ようやってると思ってたのにこれでマイナスポイントだよ。 (source)

何言っとんだ? (source)

  • 1
    Perhaps it can be understood as 何を言っておるのだ?
    – Jimmy Yang
    Commented Dec 12, 2021 at 22:04
  • @JimmyYang That'd make sense! Since ~ておる is 謙遜語, I thought it'd only apply to one's own action. But that does seem to be the most convincing explanation so far.
    – Eddie Kal
    Commented Dec 12, 2021 at 22:11


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