leave open-mouthed

amaze astound awe bewilder confound confuse dazzle disconcert dismay dumbfound flabbergast overwhelm perplex rattle shock startle stun unsettle

consternate daze discomfit electrify floor jar jolt nonplus petrify rock stagger stupefy

blow away bowl over cause wonder leave aghast shake up spring something on strike dumb strike with awe take aback take one's breath away throw a curve

bore calm clarify clear up comfort compose enlighten expect explain order soothe