Synonyms of childish in English:

childish


See definition of childish

adjective

1‘it was childish of her to rip up the picture’

SYNONYMS

immature, babyish, infantile, juvenile, puerile

silly, inane, fatuous, jejune, foolish, stupid, irresponsible, naive

ANTONYMS

mature

2‘she had a round childish face’

SYNONYMS

childlike, youthful, young, young-looking, girlish, boyish, children's, child's, adolescent, teenaged, teenage

archaic bread-and-butter

ANTONYMS

adult