Extremely evil (6)
(Other definitions for wicked that I've seen before include "Foul, evil" , "Absorbed in enchanting" , "Evil or morally wrong" , "Ungodly; excellent (sl.)" , "Very bad, or very good nowadays" .)
(Other definitions for villainous that I've seen before include "really bad" , "dramatically bad" , "Nasty" , "criminal" , "very unpleasant" .)