Nonage
Nonage , noun
[Late Latin nonagium, from Latin nonus ninth, novem nine.]
(Ecclesiastical) The ninth part of movable goods, formerly payable to the clergy on the death of persons in their parishes. — Mozley & W
Nonage , noun
[Prefix non- + age.]
Time of life before a person becomes of age; legal immaturity; minority.
The human mind... was still in its nonage.