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Wordnet 3.0

ADJECTIVE (1)

1. as if struck dumb with astonishment and surprise;
- Example: "a circle of policement stood dumbfounded by her denial of having seen the accident"
- Example: "the flabbergasted aldermen were speechless"
- Example: "was thunderstruck by the news of his promotion"
[syn: dumbfounded, dumfounded, flabbergasted, stupefied, thunderstruck, dumbstruck, dumbstricken]



The Collaborative International Dictionary of English v.0.48:

dumfounded \dumfounded\ adj.
   same as dumbfounded.

   Syn: amazed, astonied, astonished, astounded, flabbergasted,
        stunned, stupefied, thunderstruck.
        [WordNet 1.5]


The Collaborative International Dictionary of English v.0.48:

Dumfound \Dum"found`\, v. t. [imp. & p. p. Dumfounded; p. pr.
   & vb. n. Dumfounding.]
   To strike dumb; to confuse with astonishment. [Written also
   dumbfound.] --Spectator.
   [1913 Webster]


WordNet (r) 3.0 (2006):

dumfounded
    adj 1: 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, dumfounded,
           flabbergasted, stupefied, thunderstruck,
           dumbstruck, dumbstricken]