DICT.TW Dictionary Taiwan

 Dum·found v. t. [imp. & p. p. Dumfounded; p. pr. & vb. n. Dumfounding.] To strike dumb; to confuse with astonishment. [Written also dumbfound.]
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 dumfounded
      adj : as if struck dumb with astonishment and surprise; "a circle
            of policement stood dumbfounded by her denial of having
            seen the accident"; "the flabbergasted aldermen were
            speechless"; "was thunderstruck by the news of his
            promotion" [syn: dumbfounded, flabbergasted, stupefied,
             thunderstruck]