Noah Webster
Impenitence
IMPEN'ITENCE
IMPEN'ITENCY, noun [Latin in and poenitens, from poeniteo, to repent, poena, pain.] Want of penitence or repentance; absence of contrition or sorrow for sin; obduracy; hardness of heart. Final impenitence dooms the sinner to inevitable punishment.
He will advance from one degree of impenitence to another.