[1] : The Collaborative International Dictionary of English v.0.48

backbiter \back"bit`er\, n.
   one who backbites; a secret calumniator or detractor.
   1913 webster

[2] : WordNet (r) 2.0

backbiter
     n : one who attacks the reputation of another by slander or
         libel syn: defamer, maligner, slanderer, vilifier,
          libeler, traducer
see also:
defamer maligner slanderer vilifier libeler traducer 

Backbiter >> B Words
Backbiter, definition of term: Backbiter
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