juvenile

From Wiktionary

Pronunciation[change]

Adjective[change]

Positive
juvenile

Comparative
more juvenile

Superlative
most juvenile

  1. If a person is juvenile, they are childish and immature.

Noun[change]

Singular
juvenile

Plural
juveniles

  1. A juvenile is a young stage in the development of an animal. It applies to animals which have 'direct development' from the egg, not those which undergo metamorphosis.
    Young male lions which do not have manes, and are not ready for breeding, are juveniles.