addled, baffled, bamboozled, beat, befogged, befuddled, bemused, bewildered, buffaloed, confounded, confused, discombobulated, disoriented, flummoxed, foxed, got, graveled(or gravelled), mazed, muddied, muddled, mystified, perplexed, posed, puzzled, vexed(also vext)
stuck, stumped, weirded outabashed, discomfited, disconcerted, discountenanced, embarrassed, fazed, flustered, mortified, nonplussed(also nonplused), rattledagitated, bothered, chagrined, discomforted, discomposed, dismayed, disquieted, distressed, disturbed, perturbed, stunned, unhinged, unsettled, upsetbeguiled, cozened, deceived, deluded, duped, fooled, gulled, hoaxed, hoodwinked, humbugged, misguided, misled, snowed, strung along, took in, tricked
blew one's mind, went to one's head