immature
//ɪməˈtʃʊə//
Adjective
immatureCanonical form
more immatureComparative
most immatureSuperlative
1
Not fully developed physically, mentally, or emotionally.
The fruit is still immature and not ready to eat.
2
Behaving in a childish or silly way that is not appropriate for one's age.
His immature behavior at the meeting embarrassed everyone.
3
(Of a plant, animal, or organism) not yet fully grown or developed.
The immature fruit is green and hard.