INFANTILE Synonyms: 32 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/infantile
WebSynonyms for INFANTILE: childish, immature, adolescent, juvenile, puerile, babyish, jejune, kiddish; Antonyms of INFANTILE: adult, mature, grown-up, sophisticated, worldly, knowing, experienced, cosmopolitan.
DA: 47 PA: 23 MOZ Rank: 54