一いっ歩ぽ間ま違ちがうと

expression

one wrong move and ...; if you make one mistake ...

Fixed expression used to warn that a single misstep could lead to a serious or dangerous outcome. Often followed by a negative consequence.

• 一いっ歩ぽ間ま違ちがうと大だい事じ故こになっていた。

  One wrong move and it could have been a major accident.

• この作さく戦せんは一いっ歩ぽ間ま違ちがうと失しっ敗ぱいする。

  If we make one mistake, this operation will fail.