Drawn by the fascination of the horror of pain and, from within, impelled by that habit of cooperation, that desire for unanimity and atonement, which their conditioning had so ineradicably implanted in them, they began to mime the frenzy of his gestures, striking at one another as the Savage struck at his own rebellious flesh, or at that plump incarnation of turpitude writhing in the heather at his feet.
There are no more uses of "turpitude" in the book.
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If the proportion of the civilian population killed by the regime is the standard for judging the turpitude of the government, then the Communist Khmer Rouge, which ruled Cambodia between 1975 and 1979, probably deserves first prize, putting to death two million out of its seven million people.
Michael Mandelbaum -- The Ideas That Conquered the World
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.