Pronunciation: (pī'i-tē),[key] —n., —pl.-ties. 1. reverence for God or devout fulfillment of religious obligations: a prayer full of piety. 2. the quality or state of being pious: saintly piety. 3. dutiful respect or regard for parents, homeland, etc.: filial piety. 4. a pious act, remark, belief, or the like: the pieties and sacrifices of an austere life.