Noun
The quality of being impious; want of piety; irreverence toward the Supreme Being; ungodliness; wickedness.
An impious act; an act of wickednes.
Source: Webster's dictionaryBlessed the one who loves truth continually and has not lent his mouth as an instrument of impiety by lying, for he fears the commandment about idle speech. Ephrem the Syrian
Volumes might be written upon the impiety of the pious. Herbert Spencer
Given the world that he created, it would be an impiety against God to believe in him. John Banville
If one adds anything small or great to the queen of virtues, piety, or on the other hand takes something from it, in either case he will change and transform its nature. Addition will beget superstition and subtraction will beget impiety. Philo
Not to help justice in her need would be an impiety. Plato
A fellow of mediocre talent will remain a mediocrity, whether he travels or not; but one of superior talent (which without impiety I cannot deny that I possess) will go to seed if he always remains in the same place. Wolfgang Amadeus Mozart