preteen

Adjective

• of or relating to or designed for children between the ages of 9 and 12
  • a preteen party
    
  • preteen clothing
    

Noun

• a preadolescent boy or girl (usually between 9 and 12 years of age)
  • little league is intended for the preteens
    

Related words

• Synonyms: 
  preadolescent , preteenager