REPENTANCE (definition from: http://www.merriam-webster.com/dictionary/repentance)

Noun  re·pen·tance \ri-ˈpen-tən(t)s\

Definition: the action or process of repenting especially for misdeeds or moral shortcomings

Synonym Discussion of repentance:

penitence, repentance, contrition, compunction, remorse mean regret for sin or wrongdoing.

Penitence implies sad and humble realization of and regret for one's misdeeds <absolution is dependent upon sincere penitence>.

Repentance adds the implication of a resolve to change <repentance accompanied by a complete change of character>.

Contrition stresses the sorrowful regret that constitutes true penitence <tearful expressions of contrition>.

Compunction implies a painful sting of conscience especially for contemplated wrongdoing <had no compunctions about taking back what is mine>.

Remorse suggests prolonged and insistent self-reproach and mental anguish for past wrongs and especially for those whose consequences cannot be remedied <thieves untroubled by feelings of remorse>.