slander
slan-der
noun
False, damaging spoken statements harming someone's reputation, considered a legal offence.
"She faced an accusation of slander."
verb
To make false and damaging spoken statements about someone, harming their reputation.
"He tried to slander her character."
Thesaurus
Synonyms: denigrate, sully, calumniate, besmirch, defame, smear, smirch, asperse, calumny, defamation, aspersion, denigration