1) Accuse 2) Asperse 3) Besmirch 4) Charge 5) Defame 6) Denigrate 7) Slander 8) Smear 9) Smirch 10) Sully 11) Villify 1) Asperse 2) Badmouth 3) Besmirch 4) Defame 5) Malign 6) Slur 7) Traduce 
to slander; misrepresent; besmirch
• (v. t.) To accuse falsely and maliciously of a crime or offense, or of something disreputable; to slander; to libel. • (v. i.) To propagate evil reports with a design to injure the reputation of another; to make purposely false charges of some offense or crime.
Ca·lum'ni·ate intransitive verb [ imperfect & past participle Calumniated ; present participle & verbal noun calumniating .] [ Latin calumniatus , past participle of calumniari . See Calumny , and confer Challe...
[Obscure words] charge falsely or with malicious intent