The Collaborative International Dictionary of English v.0.48:

Enamor \En*am"or\, v. t. [imp. & p. p. Enamored; p. pr. & vb.
   n. Enamoring.] [OF. enamourer, enamorer; pref. en- (L. in)
   + OF. & F. amour love, L. amor. See Amour, and cf.
   Inamorato.]
   To inflame with love; to charm; to captivate; -- with of, or
   with, before the person or thing; as, to be enamored with a
   lady; to be enamored of books or science. [Written also
   enamour.]
   [1913 Webster]

         Passionately enamored of this shadow of a dream. --W.
                                                  Irving.
   [1913 Webster]

WordNet (r) 3.0 (2006):

enamored
    adj 1: marked by foolish or unreasoning fondness; "gaga over the
           rock group's new album"; "he was infatuated with her"
           [syn: enamored, infatuated, in love, potty,
           smitten, soft on(p), taken with(p)]

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "enamored":
   attached to, becharmed, bewitched, captivated, charmed,
   crazy about, devoted to, enamored of, enchanted, enraptured,
   far gone on, fascinated, fond, fond of, gone on, heartsmitten,
   hipped on, in love with, infatuate, infatuated, mad about, nuts,
   nuts about, partial to, smitten, smitten with, struck with,
   stuck on, sweet on, taken with, wedded to, wild about,
   wrapped up in