turpitude
Inherent baseness, depravity or wickedness; corruptness and evilness.
countable, uncountable
As for the moral turpitude that man unveiled to me, even with tears of penitence, I cannot, even in memory, dwell on it without a start of horror.
An act evident of such depravity.
countable, uncountable
Where it comes from
Borrowed from Middle French turpitude, from Latin turpitūdō (“baseness, infamy”), from turpis (“foul, base”).
Adapted from the Wiktionary entry turpitude (CC BY-SA 4.0).