juvenility

noun
ju·​ve·​nil·​i·​ty | \ ˌjü-və-ˈni-lə-tē How to pronounce juvenility (audio) \
plural juvenilities

Definition of juvenility

1 : the quality or state of being juvenile : youthfulness
2a : immaturity of thought or conduct
b : an instance of being juvenile

First Known Use of juvenility

circa 1623, in the meaning defined at sense 1

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