feeling or expressing sorrow for sin or wrongdoing and disposed to atonement and amendment; repentant; contrite.
noun
2.
a penitent person.
3.
Roman Catholic Church. a person who confesses sin and submits to a penance.
Origin: 1325–75;Middle English < Medieval Latinpēnitent-,Latinpaenitent- (stem of paenitēns), present participle of paenitēre to regret; replacing Middle Englishpenaunt < Anglo-French; see penance