Entry Word: childish

Function: adjective

Meaning: 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, juvenile, kiddish, puerile

Related Words boyish, girlish; childlike, innocent, naive (or naïve), simple, unsophisticated

Near Antonyms experienced, sophisticated, worldly-wise

Antonyms adult, grown-up, mature