大たい魚ぎょを逸いっする

expression, suru verb (special)

miss a big chance; let a big fish get away

Idiomatic expression; literally 'to let a big fish escape', used figuratively for missing a major opportunity. Often used in business or personal contexts.

• あの投とう資し話ばなしは大たい魚ぎょを逸いっするようなものだった。

  That investment opportunity was like letting a big fish get away.