Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
mixed-up is an adjective meaning "perplexed by many conflicting situations or statements; filled with bewilderment". It carries one recorded sense.
perplexed by many conflicting situations or statements; filled with bewilderment
“obviously bemused by his questions”
“bewildered and confused”
“a cloudy and confounded philosopher”
“just a mixed-up kid”
“she felt lost on the first day of school”
Definitions, synonyms and semantic relations for mixed-up come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.