[1] : The Collaborative International Dictionary of English v.0.48

sympathizer \sym"pathi`zer\, n.
   one who sympathizes.
   1913 webster

[2] : WordNet (r) 2.0

sympathizer
     n 1: commiserates with someone who has had misfortune syn: sympathiser,
           comforter
     2: someone who shares your feelings and expresses sympathy or
        hopes that something will be successful syn: sympathiser,
         well-wisher
see also:
sympathiser comforter well-wisher 

[3] : Moby Thesaurus II by Grady Ward, 1.0

68 moby thesaurus words for "sympathizer":
   maecenas, abettor, accessory, accomplice, acquaintance, admirer,
   advocate, aficionado, ally, alter ego, angel, apologist, approver,
   backer, best friend, bosom friend, brother, buff,
   casual acquaintance, champion, close acquaintance, close friend,
   collaborator, condoner, confidant, confidante, conspirator,
   defender, dependence, encourager, endorser, exponent, familiar,
   fan, favorer, fellow, fellow creature, fellowman, friend,
   friend at court, inseparable friend, intimate, lover, mainstay,
   maintainer, neighbor, other self, paranymph, partisan, patron,
   pickup, promoter, protagonist, reliance, repository, second,
   seconder, sectary, sider, sponsor, stalwart, standby, support,
   supporter, sustainer, upholder, votary, well-wisher

Sympathizer >> S Words
Sympathizer, definition of term: Sympathizer
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