unsins

Verb

unsin (third-person singular simple present unsins, present participle unsinning, simple past and past participle unsinned)

1. (transitive) To undo or annul a past sin.
2. (obsolete, transitive) To deprive (a sin, etc.) of sinfulness; to make sinless.
   • when a ſin is paſt, grief may leſſen it , but not unſin it.1623, Owen Feltham, Resolves: Divine, Moral, Political