slanderer
1. [ noun ] one who attacks the reputation of another by slander or libel
Synonyms: maligner libeler backbiter traducer vilifier defamer
Related terms: detractor defame badmouth vilify
Similar spelling:   slander
  slender
  slanderous
  slenderly
  slanderously
  slenderize
  slenderise
  Selander
  slenderness
  slender_rush
  Solandra
  slanted