noun
Refers to a careless mistake or something left undone due to insufficient attention. Often used in the phrase 手抜かりなく (without oversight) or to describe a failure in preparation or execution.
手抜かりのないように準備を進めてください。
Please proceed with the preparations so that there are no oversights.
彼の報告書には手抜かりが多かった。
His report had many omissions.