rebutter
1. [ noun ] a debater who refutes or disproves by offering contrary evidence or argument
Synonyms: refuter confuter disprover
Related terms: debater refute disprove refute
2. [ noun ] (law) a pleading by the defendant in reply to a plaintiff's surrejoinder
Synonyms: rebuttal
Related terms: pleading law
Similar spelling:   refuter
  repeater