v. t. To dumfound; to confound. [ Written also dumbfounder. ] [ 1913 Webster ]
adj. 1. same as astounded. Syn. -- amazed, astonied, astonished, astounded, flabbergasted, stunned, stupefied, thunderstruck. [ WordNet 1.5 ]
2. astonished and confounded. Syn. -- amazed, dumfounded. [ WordNet 1.5 ]