ぐぬぬ

interjection

damn; drat; crap

Internet slang expressing frustration or annoyance, often used in a self-deprecating or humorous way when things don't go as planned.

• また負まけた、ぐぬぬ…

  I lost again, damn it...

• ぐぬぬ、あと一いっ歩ぽだったのに。

  Drat, I was so close.