What is the meaning of Puerile?

Childish; trifling; silly.

Characteristic of, or pertaining to, a boy or boys; compare puellile. (Can we add an example for this sense? )

inflection of pueril:

1. strong/mixed nominative/accusative feminine singular
2. strong nominative/accusative plural
3. weak nominative all-gender singular
4. weak accusative feminine/neuter singular

strong/mixed nominative/accusative feminine singular

strong nominative/accusative plural

weak nominative all-gender singular

weak accusative feminine/neuter singular

puerile, childish, juvenile, boyish

children's, baby

nominative/accusative/vocative neuter singular of puerīlis

definite natural masculine singular of pueril

Source: wiktionary.org