villainize,villainizes,villainized,villainizing,villainise,villainises,villainised,villainising

...illainised,villainising

Villainize, villainizes, villainized, villainizing

http://www.merriam-webster.com/dictionary/villainize
http://en.wiktionary.org/wiki/villainize

Also alternate spelling:

Villainise, villainises, villainised, villainising

http://en.wiktionary.org/wiki/villainise