"Penitent" is a word in ENGLISH

One who repents of sin; one sorrowful on account of his
transgressions.

One under the direction of a confessor.

One under church censure, but admitted to penance; one
undergoing penance.

Feeling pain or sorrow on account of sins or offenses;
repentant; contrite; sincerely affected by a sense of guilt, and
resolved on amendment of life.

Doing penance.