Juvenility \Ju`ve*nil"i*ty\, n.; pl. {Juvenilities}. [L. juvenilitas: cf. F. juv['e]nilit['e].] [1913 Webster] 1. Youthfulness; adolescence. --Glanvill. [1913 Webster] 2. The manners or character of youth; immaturity. --Glanvill. [1913 Webster]