the.com/impenitence
The art of being sorry for nothing — least of all yourself.
means A stubborn refusal to feel regret or admit wrongdoing, even when you obviously should.
from From Latin impaenitentia: in- (not) plus paenitere (to repent, to regret), the same root that gives us penance and penitentiary — places built to undo exactly this.
Theology's nemesisCalled the one sin too proud to be forgiven.
Grammar of nerveMeans feeling no regret, not merely hiding it.
Family treeCousin to penitent, penance, and the penitentiary.