impiety - Dictionary definition and meaning for word impiety
im(not)+piety(sounds like deity which means god).. not showing respect for somebody who is "not god" ..
Im(not)+piety(pity) -- those who dont show pity to distressed people , have "lack of respect for god" too ,,
impiety->divide it as "i m piet" which sounds like "i am right" which shows no respect to anyone even god..
act of being impious