n. 1 defamation (of character), calumny, obloquy, misrepresentation, slur, vilification; libel He spread lies about me and I am suing him for slander
v. 2 defame, calumniate, disparage, slur, traduce, malign, smear, vilify, decry; libel He must be stopped from slandering people and ruining their reputations