Entry Word: juvenile

Function: adjective

Meaning: 1 being in the early stage of life, growth, or development <a juvenile alligator just hatched from its egg> — see young
2 having or showing the annoying qualities (as silliness) associated with children <throwing a tantrum is juvenile behavior for a person your age> — see childish
3 lacking in adult experience or maturity <a spoiled, juvenile golfer who does not know how to win gracefully> — see callow