JUVENILITY
youth, youthfulness, juvenility
(noun) the freshness and vitality characteristic of a young person
callowness, jejuneness, juvenility
(noun) lacking and evidencing lack of experience of life
Source: WordNet® 3.1
Etymology
Noun
juvenility (countable and uncountable, plural juvenilities)
The state or quality of being juvenile.
juvenile behaviour, writing, etc.
Antonyms
• senility
Source: Wiktionary
Ju`ve*nil"i*ty, n.; pl. Juvenilities. Etym: [L. juvenilitas: cf. F.
juvénilité.]
1. Youthfulness; adolescence. Glanvill.
2. The manners or character of youth; immaturity. Glanvill.
Source: Webster’s Unabridged Dictionary 1913 Edition