ˌpyu̇əˈriləd.ē, -lətē, -i noun
( -es )
Etymology: Middle French or Latin; Middle French puerilité, from Latin puerilitat-, puerilitas, from puerilis + -itat-, -itas -ity
1.
a. : the quality or state of being a child ; specifically : the status under civil law of a child between infancy and puberty defined as from 7 to 14 years of age in boys and from 7 to 12 years of age in girls
b. : immaturity , childishness
the ballet comic in its puerility and ugliness — Arnold Bennett
2. : an act, instance, or product of an immature mind
where he has committed the puerility of employing more words than are necessary, he now has the one correct word — College English
pettiness, juvenilities, and … puerilities become not a great assembly like this — John Adams