I am unsure what やついておる means in the following sentence:


For some context Person A is comforting Person B who has just heard some happy news and gotten emotional. Person C says the above sentence.

I've not come across やついておる in my studies before, can someone explain this to me?

  • 1
    What happened to に in 何をやついている?
    – Earthliŋ
    Mar 7, 2017 at 18:42

1 Answer 1


I think you parsed it wrong.

What are you grinning at, you bastard?

It's にやつく 'smirk; grin', a compound formed from the sound symbolic noun にや 'smirk; grin' along with the verb つく.

You can tell it's not 何を+に because that sequence of particles doesn't go together.


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