1 exhibiting silliness; immature; trivial
2 of or characteristic of a child
(C17: from Latin puerilis childish, from puer a boy)
English Collins Dictionary - English Definition & Thesaurus
babyish, childish, foolish, immature, inane, infantile, irresponsible, jejune, juvenile, naive, petty, ridiculous, silly, trivial, weak
adult, grown-up, mature, responsible, sensible
English Collins Dictionary - English synonyms & Thesaurus
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