まかり間ま違ちがえば

expression

if things go wrong; if the worst happens

A set conditional phrase used to express a hypothetical worst-case scenario. Often implies a serious or irreversible outcome.

• まかり間ま違ちがえば大だい事じ故こになっていたかもしれない。

  If things had gone wrong, it could have been a major accident.

• まかり間ま違ちがえば命いのちを落おとすところだった。

  If the worst had happened, I could have lost my life.