1) Aspersion 2) Assassination 3) Blackwash 4) Defamation 5) Detraction 6) Epithet 7) Insult 8) Libel 9) Malignment 10) Names 11) Slander 12) Smear 13) Traducement 14) Vilification 1) Defamation 2) Depreciation 3) Derogation 4) Disparagement 5) French word used in English 6) Hatchet job 7) Malicious gossip 8) Obloquy 9) Slander 10) Traducement 
n. the intentional and generally vicious false accusation of a crime or other offense designed to damage one's reputation.
vile misrepresentation
• (n.) False accusation of a crime or offense, maliciously made or reported, to the injury of another; malicious misrepresentation; slander; detraction.
(n) Calumny is the acquisition made on a party with an intention to damage his or her reputation, falsely alleging that they have committed a crime
Cal'um·ny noun ; plural Calumnies . [ Latin calumnia , from calvi to devise tricks, deceive; confer French calomnie . Confer Challenge , noun ] False accusation of a crime or offense, maliciously made or reported, to the injury of ano...
slander aspersion 
(cal-um-nee) Maliciously misrepresenting another's words or acts, causing injury to that person's reputation; or falsely charging another with a crime.
[Novel words] an abusive attack on a person's character or good name