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Classic usage
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Old French impieté, from Latin impietas, from in- (“not”) + pietas (“piety”), from pius (“pious, devout”) + -tās (“-ty, -dom”). By surface analysis, impious + -ety.
impiousness
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Classic usage
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