impiety
im·piety
noun
1.
unrighteousness by virtue of lacking respect for a god
Origin
From Old French impieté, from Latin impietas, from in- (“not”) + pietas (“piety”), from pius (“pious, devout”) + -tās (“-ty, -dom”). By surface analysis, impious + -ety.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.