プログレッシブ和英中辞典(第4版)の解説
つみほろぼし【罪滅ぼし】
atonement for one's sin(s);《文》 expiation
罪滅ぼしをする
「atone for [《文》 expiate] one's sin
罪滅ぼしに
in atonement for one's sins/to make up for 「a mistake [what one did]
罪滅ぼしに何でもいたします
I will do anything I can to make amends [it up] to you.