The definition of depraved is immoral or morally corrupt. When you continually lie to your spouse so that you can conduct extramarital affairs, this is an example of depraved behavior.morally bad; corrupt; perverted. adjective. The idea of something so sweet in Czerno's depraved hold irked him. 2  His power comes from the depraved and the forbidden. 3  Sasha had a side that was far more depraved than that of any of Wynn's other sons.