juvenility

plural juvenilities

1. countableuncountableThe state or quality of being juvenile.

   The plant grew from juvenility to maturity in a week.

   1 more example

   Next in juvenility to Abraham came two more girls, Hope and Modesty; then a boy of three, and then the baby, who had just completed his first year.

   1891, Thomas Hardy, Tess of the d'Urbervilles, volume 1, London: James R. Osgood, McIlvaine and Co., page 37

   Antonyms: senility

2. countableuncountableJuvenile behavior, writing, etc.

   The frantic fanaticism of this paragraph deprives us of all hope that Mr. Irving will, as we once fondly hoped, outgrow his juvenilities.

   1828, The Eclectic Review, volume 1, page 574

   Antonyms: senility