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Noun: calumniator  ku'lúm-nee,ey-tu(r)
Usage: formal
  1. One who attacks the reputation of another by slander or libel
    "The politician sued the calumniator for spreading false rumours";
    - defamer, maligner, slanderer, vilifier, libeler [US], backbiter, traducer, libeller [Brit, Cdn]

Derived forms: calumniators

Type of: depreciator, detractor, disparager, knocker

Encyclopedia: Calumniator