(n.) The act of disconcerting, or state of being disconcerted; discomposure; perturbation.

addle amaze babble bafflement balk ball up bamboozle be Greek to be beyond one be too deep beat beat one befuddle bewilderment bilk blast boggle bother brave buffalo cast down challenge checkmate circumvent confound confoundment confront confuse confusion contravene counter counteract countermand counterwork cross cushion damp dampen dash daze deaden deafen defeat defeat expectation defy destroy dilemma disappoint discomfit discomposure disconcert disconcertedness disconcertion disconcertment discountenance dish disillusion disrupt dissatisfy disturbance dull dumbfound elude embarrass embarrassment enigma escape one faze fix floor flummox fog foil frustrate fuddle get gibber jam keep in suspense knock the chocks let down lick lose one maze mix up muddle muffle mute mystery mystify need explanation nonplus not make sense not penetrate pass comprehension perplex perplexity perturbation pickle plight pother predicament problem puzzle puzzlement quandary rattle riddle ruin sabotage scotch scrape soft-pedal soften speak in tongues spike spoil stew stick stonewall stop stump subdue talk double Dutch tantalize tease throw thwart tone down unassuredness upset