european young man is greatly surprised and opens his mouth in astonishment

agape agog amazed astonished astounded awed awestruck bewildered captivated disbelieving dumbfounded dumbstricken dumbstruck dumfounded european fascinated flabbergasted flummoxed gaping gobsmacked impressed incredulous jawdropped man mesmerized nonplussed openmouthed overwhelmed puzzled shocked speechless startled struck stunned stupefied surprised thunderstruck wideeyed wonderstruck young