debater

from WordNet (r) 3.0 (2006)

debater
    n 1: someone who engages in debate [syn: {debater}, {arguer}]

from The Collaborative International Dictionary of English v.0.48

Debater \De*bat"er\, n.
   One who debates; one given to argument; a disputant; a
   controvertist.
   [1913 Webster]

         Debate where leisure serves with dull debaters. --Shak.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

35 Moby Thesaurus words for "debater":
      Philadelphia lawyer, apologist, arguer, argufier, casuist,
      controversialist, declaimer, demagogue, disceptator, disputant,
      guardhouse lawyer, haranguer, jawsmith, logomacher, logomachist,
      mooter, panelist, pilpulist, polemic, polemicist, polemist,
      public speaker, rabble-rouser, ranter, speaker, speecher,
      speechifier, speechmaker, spieler, spokesman, spokeswoman, spouter,
      talker, tub-thumper, wrangler

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