There are several synonyms for the word "unrepented," each with their distinct connotations. One of the most common synonyms is "unforgiven," which implies that the person has committed a wrongdoing and has not sought forgiveness. Another synonym is "unregretted," which means that the person does not feel remorse or regret for their actions. "Unremorseful" and "unapologetic" also convey a similar meaning, implying a lack of contrition or culpability. Lastly, "impenitent" is a synonym that conveys a stubborn refusal to admit wrongdoing or seek forgiveness. These synonyms demonstrate the various shades of meaning for a person who has not repented for their actions.