Synonyms to at a nonplus

at a loss, addled, at a stand, at a standstill, at an impasse, baffled, bamboozled, beat, bewildered, buffaloed, confounded, dazed, floored, fuddled, in a dilemma, in suspense, in the red, licked, muddled, mystified, nonplussed, on tenterhooks, out, out of pocket, perplexed, puzzled, stuck, stumped, thrown, to the bad, unprofitably, adamant, adamantine, as is, as per usual, as things are, as usual, at a halt, at anchor, dead-still, firm, fixed, frozen, idle, immobile, immotile, immotive, immovable, inactive, inflexible, irremovable, motionless, moveless, out of commission, pat, quiescent, riding at anchor, rigid, sedentary, standpat, static, stationary, statuelike, still, stock-still, unactive, unemployed, unmovable, unmoved, unmoving, unyielding, balked, betrayed, bilked, blasted, blighted, chapfallen, crestfallen, crosse