DICT.TW Dictionary Taiwan

 dumb·found /ˌdʌmˈfaʊnd, ˈdʌmˌ/
 (v.)使人惙然失聲;使發楞

 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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 dumbfound
      v : be a mystery or bewildering to; "This beats me!"; "Got me--I
          don't know the answer!"; "a vexing problem"; "This
          question really stuck me" [syn: perplex, vex, stick,
           get, puzzle, mystify, baffle, beat, pose, bewilder,
           flummox, stupefy, nonplus, gravel, amaze]