1) French word used in English 2) Growing up 3) Juvenile 4) Minor 5) Preadult 6) Romeo or juliet 7) Stripling 8) Teen 9) Teen ager 10) Teenaged 11) Time of life 12) Young 13) Young adult 14) Young person 15) Youngster 16) Youth 17) Youthful 
• (a.) Growing; advancing from childhood to maturity. • (n.) A youth.
an individual during the period of adolescence.
<paediatrics> An individual during the period of adolescence. ... (18 Nov 1997) ... 
Ad`o·les'cent (ăd`o*lĕs's e nt) adjective [ Latin adolescens , present participle of adolescere to grow up to; ad + the inchoative olescere to grow: confer French adolescent . See Adult .] Growing; advancing from childhood to maturity. �...Ad`o·les'cent noun A youth. 
Type: Term Pronunciation: ad-ŏ-les′ĕnt Definitions: 1. Pertaining to adolescence. 2. A person in that stage of development.
[adj] - relating to or peculiar to or suggestive of an adolescent 2. [adj] - being of the age 13 through 19 3. [adj] - displaying or suggesting a lack of maturity 4. [adj] - in the state of development between puberty and maturity 5. [n] - a juvenile between the onset of puberty and maturity
adolescent 1. Going through the period of adolescence; such as, adolescent males and females. 2. Typical of someone who is immature. 3. Etymology: from Latin adolescent from adolescere, 'to be nourished, to grow up'. This is also the source of English adult from alere, 'to nourish'. A teenager who acts like a baby when you don't treat him like a...
A person aged 10–19 years
jejune adjective displaying or suggesting a lack of maturity; `adolescent insecurity`; `jejune responses to our problems`; `their behavior was juvenile`; `puerile jokes`
growing to manhood or womanhood; youthful. · having the characteristics of adolescence or of an adolescent.
young person 10–19 years old.