前ぜん非ぴ

noun

past misdeed; past error; past folly; past sin

Refers to one's own past wrongdoings or mistakes, often in the context of repentance or reform. Common in the set phrase 前非を悔いる (to repent of one's past misdeeds).

• 彼かれは前ぜん非ぴを悔くいて、心こころを入いれ替かえた。