Get the FREE one-click dictionary software for Windows
or the iPhone/iPad and Android apps
Adjective: dumfounding  'dúm,fawn-ding or dúm'fawn-ding [N. Amer], dúm'fawn-ding [Brit]
  1. Bewildering or striking dumb with wonder
    "The magician's dumfounding trick left the audience speechless";
    - astounding, dumbfounding
Verb: dumfound  dúm,fawnd or dúm'fawnd [N. Amer], dúm'fawnd [Brit]
  1. Strike dumb; confuse with astonishment
    "The magician's trick dumfounded the audience";
    - dumbfound

See also: incredible, unbelievable