(of birds) not yet having developed feathers; "a small unfledged sparrow on the window sill"
not fully developed or mature; not ripe; "unripe fruit"; "fried green tomatoes"; "green wood"
Referring to young culms in which the lignification that strengthens the tissue is not yet complete
disapproval If you describe someone as immature, you are being critical of them because they do not behave in a sensible or responsible way. She's just being childish and immature. + immaturity im·ma·tu·rity his immaturity and lack of social skills
Something or someone that is immature is not yet completely grown or fully developed. She is emotionally immature. + immaturity im·ma·tu·rity In spite of some immaturity in the figure drawing and painting, it showed real imagination