the state of being under any of various ages at which a person may legally enter into certain transactions, such as the making of binding contracts, marrying, etc
2.
any period of immaturity
nonage in American English
(ˈnɑnɪdʒ; ˈnoʊnɪdʒ)
noun
1. Law
a.
the state of being under the lawful age for doing certain things, as marrying
b.
minority (sense 4)
2.
the period of immaturity
Word origin
ME < Anglo-Fr nounage < OFr nonage: see non- & age