adjective
Definition: Relating to the act of showing sorrow or regret for wrongdoing, often in a religious context.
Example: The priest offered a penitential prayer during the service to encourage the congregation to reflect on their actions.
noun
Definition: A book or collection of guidelines used in a religious context that relates to the act of expressing sorrow for sins and seeking forgiveness.
Example: The priest referred to the penitential to guide the congregation on the sacrament of penance.