(archaic, idiomatic) Alternative form of good head on one's shoulders / (idiomatic) Someone that has have the wisdom of age during his or her physical youth.

(informal, vulgar) Of an adolescent boy: young and foolish.

Alternative form of you can't put an old head on young shoulders

Young people inevitably lack the experience and wisdom which come with age.

comparative form of young: more young

One who is younger than another.

superlative form of young: most young / Most recently begun or formed. / (card games) Receiving dealt cards last, i.e. immediately before the next deal to the eldest.

The youngest child in a family, or individual in a group.

(Southern US, Britain West Country, Northern England, informal) A young one: a youth, a child, a kid, young person.

(archaic) Young; youthful.