immature meaning and definition

IMMATURE adjective

Definition of immature (adjective)

1. characteristic of a lack of maturity
   • "immature behavior"
   • antonym: mature
2. (used of living things especially persons) in an early period of life or development or growth
   • "young people"
   • synonyms: young
   • antonym: old
3. not fully developed or mature; not ripe
   • "unripe fruit"; "fried green tomatoes"; "green wood"
   • synonyms: green, unripe, unripened
   • antonym: mature
4. not yet mature
   • antonym: mature
5. (of birds) not yet having developed feathers
   • "a small unfledged sparrow on the window sill"
   • synonyms: unfledged
   • antonym: fledged