juvenile

Not fully grown or developed; young.

Of or characteristic of a young animal that has not reached sexual maturity.

Characteristic of, intended for, or appropriate for children or young people.

Marked by immaturity; childish: synonym: young.

Relating to or being water, gas, or a mineral-rich fluid believed to have originated from magma and to have come to the earth’s surface for the first time.

A young person; a child.

A young animal that has not reached sexual maturity.

A two-year-old racehorse.