The Collaborative International Dictionary
dumfounder
dumfounder \dum"found`er\, v. t. To dumfound; to confound. [Written also dumbfounder.]
Wiktionary
dumfounder
alt. To dumbfound; to confound. vb. To dumbfound; to confound.
Usage examples of "dumfounder".
Flask through the cabin sky-light, sitting silly and dumfoundered before awful Ahab.
And Josiah stopped stun still, and stood a lookin' perfectly dumfoundered at it.