Defamation :: Defamation (n.) Act of injuring another's reputation by any slanderous communication, written or oral; the wrong of maliciously injuring the good name of another; slander; detraction; calumny; aspersion..
Defame :: Defame (v. t.) To harm or destroy the good fame or reputation of; to disgrace; especially, to speak evil of maliciously; to dishonor by slanderous reports; to calumniate; to asperse..
Defame :: Defame (v. t.) To render infamous; to bring into disrepute.