NONAGE Meaning of NONAGE in English [ 'nəʊnɪdʒ , 'nɒn- ]■ noun formal the period of a person's immaturity or youth.OriginME: from OFr. ~ , from non- 'non-' + age 'age'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004