The Collaborative International Dictionary of English v.0.48:

Captivate \Cap"ti*vate\, v. t. [imp. & p. p. Captivated; p.
   pr. & vb. n. Captivating.] [L. captivatus, p. p. of
   captivare to capture, fr. captivus captive. See Captive.]
   1. To take prisoner; to capture; to subdue. [Obs.]
      [1913 Webster]

            Their woes whom fortune captivates.   --Shak.
      [1913 Webster]

   2. To acquire ascendancy over by reason of some art or
      attraction; to fascinate; to charm; as, Cleopatra
      captivated Antony; the orator captivated all hearts.
      [1913 Webster]

            Small landscapes of captivating loveliness. --W.
                                                  Irving.

   Syn: To enslave; subdue; overpower; charm; enchant; bewitch;
        facinate; capture; lead captive.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Captivate \Cap"ti*vate\, p. a. [L. captivatus.]
   Taken prisoner; made captive; insnared; charmed.
   [1913 Webster]

         Women have been captivate ere now.       --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

captivate
    v 1: attract; cause to be enamored; "She captured all the men's
         hearts" [syn: capture, enamour, trance, catch,
         becharm, enamor, captivate, beguile, charm,
         fascinate, bewitch, entrance, enchant]

Moby Thesaurus II by Grady Ward, 1.0:

82 Moby Thesaurus words for "captivate":
   allure, argue into, attract, becharm, beguile, bewitch, bring over,
   bring round, bring to reason, carry away, cast a spell, charm, con,
   convince, dazzle, delectate, delight, draw, draw on, draw over,
   enamor, enchant, endear, enrapture, enravish, enslave, enthrall,
   entrance, fascinate, freak out, gain, gain over, glamour, gratify,
   grip, hold, hold in thrall, hook, hook in, hypnotize, imparadise,
   infatuate, inflame with love, intrigue, knock dead, knock out,
   magnetize, mesmerize, outtalk, persuade, please, prevail on,
   prevail upon, prevail with, ravish, seduce, sell, sell one on,
   send, slay, spell, spellbind, sway, take, talk into, talk over,
   tantalize, tempt, thrill, tickle, tickle pink, titillate,
   transport, vamp, wangle, wangle into, wear down, wile, win,
   win over, witch, wow