unrepentant adj. + Add to list US //ˌənɹiˈpɛntənt// UK //ˌʌnɹɪpˈɛntənt// un·re·pen·tant SynonymsAntonymsEtymology Synonyms cussedimpenitentobdurateobstinateunremorseful Antonyms penitentrepentantOrigin From un- + repentant.