dumbfound

Verb

Synonyms: perplex vex stick get puzzle mystify baffle beat pose bewilder flummox stupefy

WordNet 3.0

Verb (1)

be a mystery or bewildering to“This beats me!”“Got me--I don't know the answer!”“a vexing problem”“This question really stuck me”Synonyms: perplex vex stick get puzzle mystify baffle beat pose bewilder flummox stupefy nonplus gravel amaze

Webster's Dictionary (GCIDE)

dumbfound \dumbfound\ v. same as dumfound.

Syn: confuse, perplex, throw, fox, befuddle, fuddle, bedevil, puzzle, mystify, baffle, bewilder, flummox, stupefy, stupify, nonplus, gravel, amaze, trounce, confound, be confusing to, make confused. [WordNet 1.5]

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]