Juvenile Least Tern

The meaning of JUVENILE is physiologically immature or undeveloped : young. How to use juvenile in a sentence. JUVENILE definition: 1. relating to a young person who is not yet old enough to be considered an adult: 2. affecting.. Learn more. Define juvenile. juvenile synonyms, juvenile pronunciation, juvenile translation, English dictionary definition of juvenile. adj. 1. a. Not fully grown or developed; young. b. Of or characteristic of a young. Jan 20, 2026 · Adjective juvenile (comparative more juvenile, superlative most juvenile) Young; not fully developed. juvenile /ˈdʒuːvɪˌnaɪl/ adj young, youthful, or immature suitable or designed for young people: juvenile pastimes n a juvenile person, animal, or plant an actor who performs youthful roles a book intended.

JUVENILE definition: of, pertaining to, characteristic of, or suitable or intended for young persons. See examples of juvenile used in a sentence. A juvenile is a child or young person who is not yet old enough to be regarded as an adult. While the noun juvenile refers to someone not physically or emotionally mature, the word is often used as an adjective to refer to anything specifically for young people, such as juvenile reading materials. JUVENILE meaning: 1 : unpleasantly childish immature; 2 : relating to or meant for young people