addled at a loss at a nonplus at a stand at a standstill at an impasse balked bamboozled beat betrayed bewildered bilked blasted blighted buffaloed chapfallen confounded crestfallen crossed crushed dashed dazed defeated disappointed dished disillusioned dissatisfied floored foiled frustrated fuddled ill done-by ill-served in a dilemma in suspense let down licked muddled mystified nonplussed on tenterhooks out of countenance perplexed puzzled regretful sorely disappointed soured stuck stumped thrown thwarted