ˌjüvəˈnilēə noun plural but sometimes singular in construction
Etymology: Latin, neuter plural of juvenilis juvenile
1. : artistic or literary compositions produced in the author's youth and typically marked by immaturity of style, treatment, or thought : youthful writing or other artistic work
essentially juvenilia and are only interesting as such — Times Literary Supplement
a curious piece of juvenilia — Milton Crane
is still juvenilia — magnificent juvenilia — Graham Greene
2.
a. : artistic or literary compositions suited to or designed for the young
the crown jewels of juvenilia — Saturday Review
b. : a book, film, or other composition of such character
endow this juvenilia with what little verisimilitude it has — Newsweek