Adjective: immature ,i-mu't(y)ûr or ,i-mu'chûr
- Not yet adult
"The immature birds still had their juvenile plumage"
- (used of living things especially persons) in an early period of life, development or growth
"immature people";
- young
- Not fully developed or mature; not ripe
"fried immature tomatoes";
- green, unripe, unripened
- Characteristic of a lack of maturity
"immature behaviour"
- (of birds) not yet having developed feathers
"a small immature sparrow on the window sill";
- unfledged
See also: adolescent, age, babyish, boyish, boylike, childish, childlike, childly, early, embryologic, embryonal, embryonic, five-year-old, four-year-old, girlish, inceptive, inchoative, infantile, jejune, junior, juvenile, larval, little, matureness, maturity, new, newborn, one-year-old, preadolescent, premature, prepubertal, prepubescent, prepupal, preteen, pubescent, puerile, pupal, puppyish, puppylike, schoolboyish, schoolgirlish, small, teen, teenage, teenaged, tender, three-year-old, two-year-old, unaged, underdeveloped, unfeathered, vernal, wet behind the ears, young, youngish, youthful
Encyclopedia: Immature