prepubescent
From Longman Dictionary of Contemporary EnglishRelated topics: Humanprepubescentpre‧pu‧bes‧cent /ˌpriːpjuːˈbesənt◂/ adjective formal HBHrelating to the time just before a child reaches pubertyExamples from the Corpusprepubescent• Brassieres upholstered with foam rubber were produced as beauty aids even for the well-endowed and even for prepubescent girls.