Dict: strongs - immature

Strongs:

H1154 @ בּסר beser beh'-ser From an unused root meaning to be sour; an immature grape: - unripe grape.

G3516 @ νήπιος nēpios nay'-pee-os From an obsolete particle νη ne; implying negation and G2031; not speaking that is an infant (minor); figuratively a simple minded person an immature Christian: - babe child (+ -ish).

G3813 @ παιδίον paidion pahee-dee'-on Neuter diminutive of G3816; a childling (of either sex) that is (properly) an infant or (by extension) a half grown boy or girl; figuratively an immature Christian: - (little young) child damsel.