adolescent adolescent /ˌædoʊˈlɛsənt/

adjective

1. () Relating to or peculiar to or suggestive of an adolescent  ( adolescent )
   relating to or peculiar to or suggestive of an adolescent
    Adolescent problems
   adolescent problems
   
2. In the state of development between puberty and maturity  ( adolescent )
   in the state of development between puberty and maturity
    Adolescent boys and girls
   adolescent boys and girls
   
3. Displaying or suggesting a lack of maturity  ( adolescent , jejune , juvenile , puerile )
   displaying or suggesting a lack of maturity
    Adolescent insecurity
   adolescent insecurity
    Jejune responses to our problems
   jejune responses to our problems
    Their behavior was juvenile
   their behavior was juvenile
    Puerile jokes
   puerile jokes
   
4. Being of the age 13 through 19  ( adolescent , teenaged , teenage , teen )
   being of the age 13 through 19
    Teenage mothers
   teenage mothers
    The teen years
   the teen years
   

noun

1. () A juvenile between the onset of puberty and maturity  ( stripling , teen , adolescent , teenager )
   a juvenile between the onset of puberty and maturity
    As a teenager, I loved going to concerts
   As a teenager, I loved going to concerts