nonage

/ˈnɑnɪdʒ/
noun
  1. The period of being legally underage; minority, especially before the age of adulthood (often 18 or 21).
    • During his nonage, he was not allowed to sign contracts without a guardian.
    • She inherited the estate but could not control it until her nonage ended.
    • The law protects the rights of children during their nonage.
Antonyms
What does "nonage" mean? | whatsthatwordmean | whatsthatwordmean