Difference between Immature and Schoolboyish

IMMATURE vs SCHOOLBOYISH: NOUN

Not yet mature
Lacking in development
(used of living things especially persons) in an early period of life or development or growth
(of birds) not yet having developed feathers
Not fully developed or mature; not ripe
Not fully grown or developed.
Marked by or suggesting a lack of normal maturity: : young.
Not mature; unripe; not arrived at perfection of full development; crude; unfinished
Premature; untimely; too early.
Not fully formed or developed, unripe.
Silly or childish in behavior.
Characteristic of a lack of maturity

Not ripe
Not fully developed or mature
Synonyms Raw, green, crude, unfinished, undigested.
Coming before the natural time; premature; too early.
Not mature or ripe; not complete in growth or development; hence, unfinished; not perfected: as, immature fruit; an immature youth; immature plans or counsels.

Unformed, Embryonic, Adolescent, Prepubescent, Underdeveloped, Pubescent, Jejune, Inexperienced, Puerile, Unsophisticated, Babyish, Callow, Naive, Childish, Infantile

Unformed, Embryonic, Adolescent, Prepubescent, Underdeveloped, Pubescent, Jejune, Inexperienced, Puerile, Unsophisticated, Babyish, Callow, Naive, Childish, Infantile

Some men are too immature to do that.
We specialize in treating and managing immature apices.
Some of these children are viewed as immature.
These men are usually insecure and emotionally immature.
In addition, the immature denial and immature projection categories of the DMM show promise in the assessment of personality pathology.
Control immature embryos without hygromycin B, immature embryos produced compact and embryogenic calli and started turning green.
Callus induction occurred from the somatic cells of ovary wall, immature and mature embryos, immature endosperm, stem nodes, and seedlings.
The CBS announcers called the play immature and explained that Palmer has some immature tendencies.
He noted that the tissue was characterised by disorganized, immature collagen formation with immature fibroblastic and vascular elements.
Preferably, tissue utilized in initiating callus is immature tissue such as immature embryos, immature inflorescences, and the basal portion of young leaves.