(1) - Impiety (n.) An impious act; an act of wickednes. (2) - Impiety (n.) The quality of being impious; want of piety; irreverence toward the Supreme Being; ungodliness; wickedness.
(1) - Impious (a.) Not pious; wanting piety; irreligious; irreverent; ungodly; profane; wanting in reverence for the Supreme Being; as, an impious deed; impious language.