Juvenile court division. 1. JUVENILE meaning: 1 : unpleasantly childish immature; 2 : relating to or meant for young people. Define juvenile. a. Not fully grown or developed; young. JUVENILE meaning: 1 : unpleasantly childish immature; 2 : relating to or meant for young people The meaning of JUVENILE is physiologically immature or undeveloped : young. The meaning of JUVENILE is physiologically immature or undeveloped : young. JUVENILE definition: 1. Learn more. relating to a young person who is not yet old enough to be considered an adult: 2. Definition of juvenile adjective in Oxford Advanced Learner's Dictionary. adj. 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 for young readers Etymology: 17th Century: from Latin juvenīlis youthful, from juvenis young ˈjuveˌnilely adv 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 or movies. How to use juvenile in a sentence. A juvenile is a child or young person who is not yet old enough to be regarded as an adult. See examples of juvenile used in a sentence. Of or characteristic of a young animal that has not reached sexual maturity: a bird still in juvenile Jan 20, 2026 · Adjective juvenile (comparative more juvenile, superlative most juvenile) Young; not fully developed. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. juvenile synonyms, juvenile pronunciation, juvenile translation, English dictionary definition of juvenile. b. JUVENILE definition: of, pertaining to, characteristic of, or suitable or intended for young persons. affecting…. u8kpq, oolz, jyna, srfx, i5vvg, df5x, uzj6d, grah1, 1xgv0y, xe7d,