turpitude UK /ˈtɜː(ɹ)pɪtjuːd/US /ˈtɜɹpətuːd/ noun2 •Inherent baseness, depravity or wickedness; corruptness and evilness.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. — 1886 •An act evident of such depravity. formsturpitudes