rebutter

re·but·ter  (r-btr)

n.

One who refutes or rebuts.

Thesaurus

Noun	1.	rebutter - a debater who refutes or disproves by offering contrary evidence or argument confuter, disprover, refuter arguer, debater - someone who engages in debate
	2.	rebutter - (law) a pleading by the defendant in reply to a plaintiff's surrejoinder rebuttal pleading - (law) a statement in legal and logical form stating something on behalf of a party to a legal proceeding law, jurisprudence - the collection of rules imposed by authority; "civilization presupposes respect for the law"; "the great problem for jurisprudence to allow freedom while enforcing order"