I. -s ə nt noun
Etymology: French, from Latin adolescent-, adolescens, present participle of adolescere to grow up — more at adult
Date: 15th century
: one that is in the state of adolescence
II. adjective
Date: 1785
1. : of, relating to, or being in adolescence
2. : emotionally or intellectually immature
• ad·o·les·cent·ly adverb