discourser

Discourser \Dis*cours"er\, n.
   1. One who discourse; a narrator; a speaker; an haranguer.
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            In his conversation he was the most clear
            discourser.                           --Milward.
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   2. The writer of a treatise or dissertation.
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            Philologers and critical discoursers. --Sir T.
                                                  Browne.
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35 Moby Thesaurus words for "discourser":
      Boanerges, author, chalk talker, collocutor, colloquialist,
      conversational partner, conversationalist, converser, descanter,
      dialogist, disquisitor, essayist, expositor, expounder, homilist,
      interlocutor, interlocutress, interlocutrice, interlocutrix,
      lecturer, monographer, monographist, palaverer, parleyer,
      praelector, preacher, pulpitarian, pulpiteer, reader, sermoner,
      sermonist, sermonizer, talker, tractation, writer