Impenitent
Impenitent , adjective
[Latin impaenitens; pref. im- not + paenitens penitens: compare French impénitent. See Penitent.]
Not penitent; not repenting of sin; not contrite; of a hard heart.
They... died impenitent.
A careless and impenitent heart.
Impenitent , noun
One who is not penitent. [Rare]