- penitentiaryA state or federal prison for convicted felons; (loosely) a prison.
- penanceA voluntary self-imposed punishment for a sinful act or wrongdoing. It may be intended to serve as reparation for the act.
- penitenceThe condition of being penitent; a feeling of regret or remorse for doing wrong or sinning.
- penitentialPertaining to penance or penitence.