preteen

/priˈtin/
noun
  1. A child between the ages of about 9 and 12, just before becoming a teenager.
    • She started babysitting when she was a preteen.
    • The camp is designed for preteens who want to learn new skills.
    • Many preteens enjoy reading adventure stories.
adjective
  1. Relating to or suitable for children aged about 9 to 12.
    • She joined a preteen book club at the library.
    • The store has a popular preteen clothing section.
    • Preteen movies often focus on friendship and school life.