"depravity," 1540s, from Latin pravitas "crookedness, distortion, deformity; impropriety, perverseness," from pravus "wrong, bad," literally "crooked."
Online Etymology Dictionary, © 2010 Douglas Harper
Examples from the Web for pravity
The truth of the Moral Perceptions in man,—not, as the degenerate churches of our day teach, their pravity and blindness; 2dly.Studies of Christianity
Sin seen from the thought is a diminution or loss; seen from the conscience or will, it is a pravity or bad.