Definitions for "Immature"
Not mature; unripe; not arrived at perfection of full development; crude; unfinished; as, immature fruit; immature character; immature plans.
Not fully grown, still young.
A term used to describe tobacco that has not reached its peak of ripeness in the field.
(of birds) not yet having developed feathers; "a small unfledged sparrow on the window sill"
An immature bird is a juvenile that has undergone its first moult but does not yet have full adult plumage.
A young bird in its first years plummage.
The larva or pupa of an insect.
Premature; untimely; too early; as, an immature death.
(used of living things especially persons) in an early period of life or development or growth; "young people"
lacking in development; "immature plans"; "an unformed character"