dumfounding adj 1: bewildering or striking dumb with wonder [syn: {astounding}, {dumbfounding}, {dumfounding}]
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]
dumfounding \dumfounding\ adj. same as {dumbfounding}. Syn: astonishing, astounding, dumbfounding. [WordNet 1.5]