WordNet (r) 3.0 (2006):

bemused
    adj 1: deeply absorbed in thought; "as distant and bemused as a
           professor listening to the prattling of his freshman
           class"; "lost in thought"; "a preoccupied frown" [syn:
           bemused, deep in thought(p), lost(p),
           preoccupied]
    2: perplexed by many conflicting situations or statements;
       filled with bewilderment; "obviously bemused by his
       questions"; "bewildered and confused"; "a cloudy and
       confounded philosopher"; "just a mixed-up kid"; "she felt
       lost on the first day of school" [syn: baffled,
       befuddled, bemused, bewildered, confounded,
       confused, lost, mazed, mixed-up, at sea]

Moby Thesaurus II by Grady Ward, 1.0:

75 Moby Thesaurus words for "bemused":
   absent, absentminded, absorbed, abstracted, addled, beery,
   besotted, blind drunk, castle-building, crapulent, crapulous,
   daydreaming, daydreamy, distrait, dizzy, dreaming, dreamy,
   drenched, drowsing, drunk, drunken, ecstatic, elsewhere, engrossed,
   far-gone, faraway, flustered, fou, full, gay, giddy, glorious,
   half-awake, happy, in a reverie, in liquor, in the clouds,
   inebriate, inebriated, inebrious, intoxicated, jolly, lost,
   lost in thought, maudlin, meditative, mellow, merry, mooning,
   moonraking, muddled, museful, musing, napping, nappy, nodding,
   oblivious, pensive, pipe-dreaming, preoccupied, rapt, reeling,
   shikker, sodden, somewhere else, sotted, stargazing, taken up,
   tiddly, tipsy, transported, unconscious, under the influence,
   woolgathering, wrapped in thought