puerileness


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puer·ile

 (pyo͝or′īl′, pwĕr′-, pyo͞o′ər-, -əl)
adj.
1. Immature, especially in being silly or trivial; childish. See Synonyms at young.
2. Archaic Belonging to childhood; juvenile.

[Latin puerīlis, from puer, child, boy; see pau- in Indo-European roots.]

puer·ile·ly adv.
puer′il′i·ty (-ĭl′ĭ-tē), puer′ile·ness (-əl-nĭs, -īl-) n.