Oxford Dictionary English mixed up adjectiveadjective BrE BrE//ˌmɪkst ˈʌp// ; NAmE NAmE//ˌmɪkst ˈʌp// (informal) Youth Add to my wordlistjump to other resultsconfused because of mental, emotional or social problems a mixed-up kid/teenager She was insecure, mixed up and angry. Wordfinderyoungadolescent, immature, mixed up, naive, puberty, rebellious, sulky, tearaway, teenager, young See related entries: YouthCheck pronunciation: mixed up oxfordlearnersdictionaries.com