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confound, confuse, puzzle, baffle, perplex, mystify, flummox, bemuse
puzzle, confuse, stump, bewilder, confound, perplex, mystify, flummox
* bewilder * confuse * bamboozle * puzzle * perplex * confound * stump * flabbergast
baffle, confound, disconcert, mystify
The word flummox means to perplex (someone) greatly or bewilder someone.