youth

noun

1.
a young person (especially a young man or boy)
youngling spring chicken young person younker
2.
young people collectively
childer young
3.
the time of life between childhood and maturity
4.
early maturity; the state of being young or immature or inexperienced
burd younghead youthness
5.
an early period of development
frumbeardling early days
6.
the freshness and vitality characteristic of a young person
youngth youthhood juvenility youthfulness