ˈimpiousness [f. as prec. + -ness.] The quality of being impious; impiety. 1599Sandys Europæ Spec. (1632) 127 Who indeed doe blot out much impiousnesse and filth.1695Ld. Preston Boeth. iii. 113 note, The Impiousness of which Fact he ordered Papinian to excuse.