doing something over again; redoing or correcting something because of a mistake or deficiency.
提出物に不備があったため、やり直しを命じられた。
Because the submission had defects, I was ordered to redo it.
この部分はやり直しが必要だ。
This part needs to be redone.
試験で不合格だったので、やり直しの機会をもらった。
I failed the exam, so I got a chance to retake it.