The word un-repentant refers to someone who refuses to show regret or remorse for their actions. Some of the synonyms for un-repentant include unapologetic, unremorseful, and unabashed. These words all convey a sense of defiance and lack of introspection. Other synonyms for un-repentant include incorrigible, hardened, and stubborn. These words suggest that the person in question is unlikely to change their ways or alter their behavior. By using different synonyms for un-repentant, one can convey different shades of meaning and emphasize different aspects of someone's personality or character.