Search Result for "impiety": 
Wordnet 3.0

NOUN (1)

1. unrighteousness by virtue of lacking respect for a god;
[syn: impiety, impiousness]

The Collaborative International Dictionary of English v.0.48:

Impiety \Im*pi"e*ty\ ([i^]m*p[imac]"[-e]*t[y^]), n.; pl. Impieties ([i^]m*p[imac]"[-e]*t[i^]z). [L. impietas, fr. impius impious; cf. F. impi['e]t['e]. See Impious, Piety.] 1. The quality of being impious; lack of piety; irreverence toward the Supreme Being; ungodliness; wickedness. [1913 Webster] 2. An impious act; an act of wickedness. [1913 Webster] Those impieties for the which they are now visited. --Shak. Syn: Ungodliness; irreligion; unrighteousness; sinfulness; profaneness; wickedness; godlessness. [1913 Webster]
WordNet (r) 3.0 (2006):

impiety n 1: unrighteousness by virtue of lacking respect for a god [syn: impiety, impiousness] [ant: piety, piousness]
Moby Thesaurus II by Grady Ward, 1.0:

19 Moby Thesaurus words for "impiety": blasphemousness, blasphemy, desecration, godlessness, irreligion, profanation, profaneness, profanity, sacrilege, sacrilegiousness, sinfulness, un-Christliness, unangelicalness, unchristianliness, ungodliness, unholiness, unrighteousness, unsaintliness, wickedness
The Devil's Dictionary (1881-1906):

IMPIETY, n. Your irreverence toward my deity.