slander

(noun) words falsely spoken that damage the reputation of another.

(noun) an abusive attack on a person's character or good name. Synonyms: aspersion, calumny, defamation, denigration.

(verb) charge falsely or with malicious intent; attack the good name and reputation of someone. Synonyms: defame, smirch, asperse, denigrate, calumniate, smear, sully, besmirch. Example: "The journalists have defamed me!" "the article in the paper sullied my reputation."