闇やみ夜よの鉄てっ砲ぽう

expression, noun

shot in the dark; aimless attempt; crapshoot

Idiomatic expression for an action taken without clear aim or knowledge, like firing a gun in the dark. Often used when the outcome is uncertain and the attempt is based on guesswork.

• 彼かれの提てい案あんは闇やみ夜よの鉄てっ砲ぽうだったが、意い外がいにも成せい功こうした。

  His proposal was a shot in the dark, but surprisingly it succeeded.

• 当あてずっぽうで答こたえるのは闇やみ夜よの鉄てっ砲ぽうだ。

  Answering with a wild guess is like a shot in the dark.