adolescent

Adjective

• in the state of development between puberty and maturity
  • adolescent boys and girls
    

• displaying or suggesting a lack of maturity
  • adolescent insecurity
    
  • jejune responses to our problems
    
  • their behavior was juvenile
    
  • puerile jokes
    

• being of the age 13 through 19
  • teenage mothers
    
  • the teen years
    

• relating to or peculiar to or suggestive of an adolescent
  • adolescent problems
    

Noun

• a juvenile between the onset of puberty and maturity

Related words

• Synonyms: 
  jejune , juvenile , puerile , teen , teenage , teenaged , stripling , teenager