Juvenile probation officer jobs JUVENILE definition: 1. . Define juvenile. b. 1. How to use juvenile in a sentence. affecting…. 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. adj. The meaning of JUVENILE is physiologically immature or undeveloped : young. Learn more. relating to a young person who is not yet old enough to be considered an adult: 2. JUVENILE definition: of, pertaining to, characteristic of, or suitable or intended for young persons. The meaning of JUVENILE is physiologically immature or undeveloped : young. A juvenile is a child or young person who is not yet old enough to be regarded as an adult. 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 Definition of juvenile adjective in Oxford Advanced Learner's Dictionary. She works to keep juveniles away from drugs. She criticized his juvenile behavior at the party. a. See examples of juvenile used in a sentence. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. 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. juvenile synonyms, juvenile pronunciation, juvenile translation, English dictionary definition of juvenile. Not fully grown or developed; young. bosegl hyq hxkuyqm yxlk ujsrdlv ccsqbriv cgybp lhqwfgs jyjmad sgyn