Synonyms and Antonyms of childish
having or showing the annoying qualities (as silliness) associated with children you almost spoiled the ceremony for everyone with your childish giggling Synonyms adolescent, babyish, immature, infantile, jejune, juvenile, kiddish, puerile Related Words boyish, brattish, bratty, girlie (or girly), girlish; childlike, innocent, naive (or naïve), simple, simplistic, unsophisticated Near Antonyms unchildlike; cosmopolitan, experienced, knowing, smart, sophisticated, worldly, worldly-wise Antonyms adult, grown-up, mature
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