depravity
Meaning: wickedness
Usage: Rumors of the ogre’s depravity made the children afraid to enter the forest.
iniquity
Meaning: wickedness or sin
Usage: “Your iniquity,” said the priest to the practical jokester, “will be forgiven.”
heinous
Meaning: shockingly wicked, repugnant
Usage: The plan to kill/torture victims was a heinous crime.