From un- + repentance. <span class="searchmatch">unrepentance</span> (uncountable) Lack of repentance; failure to repent....
αμετανοησία • (ametanoïsía) f (uncountable) impenitence, <span class="searchmatch">unrepentance</span> αμετανόητος (ametanóitos, “impenitent, unrepentant”)...