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Synonyms and Antonyms of infantile

  1. having or showing the annoying qualities (as silliness) associated with children <the infantile humor that teenage boys are justly famous for> Synonyms adolescent, babyish, immature, childish, jejune, juvenile, kiddish, puerileRelated Words boyish, brattish, bratty, girlie (or girly), girlish; childlike, innocent, naive (or naïve), simple, simplistic, unsophisticatedNear Antonyms unchildlike; cosmopolitan, experienced, knowing, smart, sophisticated, worldly, worldly-wiseAntonyms adult, grown-up, mature

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