calumny, defamation, aspersion, calumniate, denigrate, defame, besmirch, sully, smirch, smear, more...

praise, commendation, accolade, approval, endorsement

such, malicious, vile, foul, personal, gross, mere, vicious, infamous, cruel, sexual

defamatory writing,   speak badly of,   insult badly,   dump dirt on,   falsely accuse,   talk bad about,   ruin reputation,   talk trash about,   attack with lies,   damage reputation