Definition from Wiktionary, the free dictionary
archvillain (plural archvillains)
- (chiefly narratology) A supreme villain; the most evil or powerful villain
2009, January 6, “Clyde Haberman”, in We Know About the Mess. Please, Clean Up Carefully.:
- Madoff is the season's archvillain, accused of having run a Ponzi scheme so vast that future generations may well describe similar swindles as Madoff schemes.
a supreme villain; the most evil or powerful villain