Same word as villainize:

asperse, bad-mouth, belie, besmirch, blacken, blister, calumniate, cast aspersions on, cast slur on, denigrate, detract, discredit, disgrace, dishonor, disparage, do a number on, knock, malign, pan, put zingers on, roast, scandalize, scorch, slam, smear, speak evil of, stigmatize, throw mud at, traduce, vilify, villainize, vituperate