The Collaborative International Dictionary of English v.0.48:

Devotee \Dev`o*tee"\, n.
   One who is wholly devoted; esp., one given wholly to
   religion; one who is superstitiously given to religious
   duties and ceremonies; a bigot.
   [1913 Webster]

         While Father Le Blanc was very devout he was not a
         devotee.                                 --A. S. Hardy.
   [1913 Webster]

WordNet (r) 3.0 (2006):

devotee
    n 1: an ardent follower and admirer [syn: fan, buff,
         devotee, lover]

Moby Thesaurus II by Grady Ward, 1.0:

70 Moby Thesaurus words for "devotee":
   Christian, God-fearing man, accepter, addict, adherent, admirer,
   aficionado, amateur, aspirant, aspirer, believer, booster, buff,
   bug, candidate, catechumen, churchgoer, churchite, churchman,
   collector, communicant, convert, coveter, crank, daily communicant,
   desirer, devotionalist, dilettante, disciple, energumen,
   enthusiast, fan, fanatic, fanatico, fancier, fiend, follower,
   freak, good Christian, groupie, habitue, hankerer, head, hopeful,
   hound, idolater, idolizer, infatuate, junkie, lover,
   lunatic fringe, monomaniac, neophyte, nut, pietist, proselyte,
   receiver, religionist, rooter, saint, solicitant, suitor, theist,
   truster, votary, wanter, wisher, worshiper, yearner, zealot