Being in an early period of growth or development
Of or characteristic of a child, especially in immaturity
He's a nice little boy, a bit immature, but very intelligent.
Katie had always been immature, maybe even a little lazy.
The cups are the most valuable portion of the valonia, abounding in tannic acid; immature acorns are sometimes exported under the name of "camatina."
That illogical, immature holdout still blamed him for winning her love before he told her.
In some cases a single corm produces several new plants during its second spring by giving rise to immature corms.