Prepubescent
ahd-5
adjective.
Of, relating to, or characteristic of prepuberty.
noun.
A prepubescent child.
The Century Dictionary and Cyclopedia
Prior to the occurrence of puberty.
Wiktionary, Creative Commons Attribution/Share-Alike License
adjective.
Before the age at which a person is first capable of sexual
reproduction
.
adjective.
Who is not yet capable of sexual reproduction. Immature.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
(especially of human beings) at the age immediately before puberty; often marked by accelerated growth