flabbergast Synonyms

boggle bowl over stun stump startle stagger shock shake puzzle perplex paralyse overwhelm overcome boggle the mind stupefy knock socks off leave open-mouthed leave aghast knock for six take aback dumbfound shake up strike dumb unsettle throw surprise nonplus floor benumb bemuse bedazzle bamboozle baffle awe astonish astound appall amaze alarm besot bewilder fascinate dumfounder dumfound dismay disconcert discomfit dazzle daze daunt