Source : Webster's Revised Unabridged Dictionary (1913)

Turpitude \Tur"pi*tude\, n. [L. turpitudo, from turpis foul,
   base.]
   Inherent baseness or vileness of principle, words, or
   actions; shameful wickedness; depravity. --Shak.

Source : WordNet®

turpitude
     n : a corrupt or depraved or degenerate act or practice; "the
         various turpitudes of modern society" [syn: {depravity}]