Juvenilities

Part of speech: noun

Definitions

1. The quality or state of being youthful or immature, often associated with characteristics typical of young people
2. Acts or behaviors that reflect the traits, quirks, or naivety found in youth
3. A variety of experiences, tendencies, or attributes that signify or represent youthful exuberance and development

Etymology: "Juvenilities" is simply the plural of "juvenility," so it refers to multiple instances of the trait. "Juvenility" was borrowed from Latin "iuvenilitas," meaning youthfulness, which itself grew out of "iuvenis," the Latin word for a young person. English later built "juvenile" from the same Latin stem and added the suffix "-ity," which turns an adjective into a noun for a quality. The Latin root points to the word's core sense: a state or condition of being young. Over time English speakers attached that sense to the behaviour rather than the age itself. The shift from "youthful" to "immature" is what makes the term useful for describing childish conduct in adults, as in the plural form's sense of repeated silly or naive acts.