mix up vs flummox

mix up and flummox both are verbs.

Word	Noun	Adjective	Verb	Adverb
mix up	No	No	Yes	No
flummox	No	No	Yes	No

As verbs, flummox is a hypernym of mix up; that is, flummox is a word with a broader meaning than mix up:

Other hypernyms of mix up include amaze, baffle, beat, bewilder, dumbfound, get, gravel, mystify, nonplus, perplex, pose, puzzle, stick, stupefy, vex.

mix up (verb)	flummox (verb)
cause to be perplexed or confounded	be a mystery or bewildering to
assemble without order or sense