逆さか立だちしても

expression

no matter how hard one tries; even if one stood on one's head

Fixed expression meaning 'no matter what one does' or 'even if one tries one's hardest'. Literally 'even if one does a handstand', it emphasizes the impossibility of achieving something regardless of effort.

See also: 逆立ち

• 逆さか立だちしても彼かれには勝かてない。

  No matter how hard I try, I can't beat him.

• この問もん題だいは逆さか立だちしても解とけそうにない。

  I don't think I can solve this problem no matter what I do.