The Collaborative International Dictionary of English v.0.48:

copyreader \copyreader\ n.
   an editor who prepares text for publication.

   Syn: copy editor, text editor.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

copyreader
    n 1: an editor who prepares text for publication [syn: copy
         editor, copyreader, text editor]

Moby Thesaurus II by Grady Ward, 1.0:

41 Moby Thesaurus words for "copyreader":
   city editor, columnist, copy chief, copy editor, copyholder,
   copyman, correspondent, cub reporter, diaskeuast, editor,
   editorial writer, feature editor, foreign correspondent, gazetteer,
   interviewer, journalist, leader writer, leg man, managing editor,
   news editor, newsman, newspaperman, newspaperwoman, newswriter,
   own correspondent, paragrapher, paragraphist, pressman,
   proofreader, publicist, reader, reporter, reviser, rewrite man,
   rewriter, slotman, sob sister, special correspondent,
   sports editor, subeditor, war correspondent