The Collaborative International Dictionary of English v.0.48:

Bamboozle \Bam*boo"zle\ (b[a^]m*b[=oo]"z'l), v. t. [imp. & p. p.
   Bamboozled (b[a^]m*b[=oo]"z'ld); p. pr. & vb. n.
   Bamboozling (b[a^]m*b[=oo]"zl[i^]ng).] [Said to be of Gipsy
   origin.]
   To deceive by trickery; to cajole by confusing the senses; to
   hoax; to mystify; to humbug. [Colloq.] --Addison.
   [1913 Webster]

         What oriental tomfoolery is bamboozling you? --J. H.
                                                  Newman.
   [1913 Webster]

WordNet (r) 3.0 (2006):

bamboozle
    v 1: conceal one's true motives from especially by elaborately
         feigning good intentions so as to gain an end; "He
         bamboozled his professors into thinking that he knew the
         subject well" [syn: bamboozle, snow, hoodwink, pull
         the wool over someone's eyes, lead by the nose, play
         false]

Moby Thesaurus II by Grady Ward, 1.0:

65 Moby Thesaurus words for "bamboozle":
   addle, amaze, baffle, beat, befool, beguile, betray, bilk, bluff,
   boggle, buffalo, cajole, cheat on, chicane, circumvent, confound,
   conjure, daze, deceive, delude, diddle, double-cross, dupe,
   flimflam, floor, fool, forestall, fuddle, gammon, get, get around,
   gull, hoax, hocus-pocus, hoodwink, hornswaggle, humbug, juggle,
   keep in suspense, let down, lick, maze, mock, muddle, mystify,
   nonplus, outmaneuver, outreach, outsmart, outwit, overreach,
   perplex, pigeon, play one false, put something over, puzzle, snow,
   stick, string along, stump, swindle, take in, throw, trick,
   two-time