The Collaborative International Dictionary of English v.0.48:

Infatuate \In*fat"u*ate\ (?; 135), a. [L. infatuatus, p. p. of
   infatuare to infatuate; pref. in- in + fatuus foolish. See
   Fatuous.]
   Infatuated. --Bp. Hall.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Infatuate \In*fat"u*ate\, v. t. [imp. & p. p. Infatuated; p.
   pr. & vb. n. Infatuating.]
   [1913 Webster]
   1. To make foolish; to affect with folly; to weaken the
      intellectual powers of, or to deprive of sound judgment.
      [1913 Webster]

            The judgment of God will be very visible in
            infatuating a people . . . ripe and prepared for
            destruction.                          --Clarendon.
      [1913 Webster]

   2. To inspire with a foolish and extravagant passion; as, to
      be infatuated with gaming.
      [1913 Webster]

            The people are . . . infatuated with the notion.
                                                  --Addison.
      [1913 Webster]

WordNet (r) 3.0 (2006):

infatuate
    v 1: arouse unreasoning love or passion in and cause to behave
         in an irrational way; "His new car has infatuated him";
         "love has infatuated her"

Moby Thesaurus II by Grady Ward, 1.0:

85 Moby Thesaurus words for "infatuate":
   addict, admirer, adorer, aficionado, allure, amorist, attract,
   becharm, befool, beguile, beset, besotted, bewitch, buff, bug,
   captivate, carry away, cast a spell, charm, collector, compel,
   crank, demon, devotee, dotty, draw on, drive, dupe, eager beaver,
   enamor, enamored, enchant, endear, energumen, enrapture, enravish,
   enthrall, enthusiast, entrance, faddist, fan, fanatic, fanatico,
   fascinate, fiend, follower, freak, great one for, grip, gull,
   hobbyist, hold, hold in thrall, hound, hypnotize, impel,
   inflame with love, intrigue, lover, lunatic fringe, mesmerize,
   monomaniac, not let go, nut, obsess, paramour, possess, preoccupy,
   pursuer, put on, rhapsodist, seduce, spell, spellbind, stultify,
   sucker for, suitor, tantalize, tempt, transport, vamp, visionary,
   witch, wooer, zealot