This was a word that was often hurled around in my family, brother to brother, mother to son, brother to father, etc. etc... Not in the strictest meaning of it, mind you, we were joking. I think. I hope. Not sure anymore, might have to call my brother, that:
Reprobate -- a morally corrupt or depraved person
Reprobate comes from the Latin reprobare, meaning "to disapprove" or "to condemn." It came about in the late 16th century. It's also a pretty good word to call your brother when he once again takes your book without asking.
Also, these guys...
