Synonyms of childish

childish

adjective

ˈchī(-ə)l-dish 

as in immature

having or showing the annoying qualities (as silliness) associated with children

you almost spoiled the ceremony for everyone with your childish giggling

Synonyms & Similar Words

• immature
• adolescent
• juvenile
• infantile
• babyish
• puerile
• kiddish
• jejune
• simple
• girlish
• boyish
• childlike
• innocent
• simplistic
• naive
• unsophisticated
• bratty
• brattish
• girlie

Antonyms & Near Antonyms

• mature
• adult
• grown-up
• sophisticated
• worldly
• knowing
• smart
• experienced
• cosmopolitan
• unchildlike
• worldly-wise

Example Sentences

Recent Examples of childish

While there is absolutely nothing childish about the property, there are crib and highchairs available, children’s menus at the hotel’s restaurant, and babysitting services that can be arranged through a third party. — Condé Nast, Condé Nast Traveler, 4 July 2026

Of course, this is no tragedy — there comes a time to put away childish things, 40-something video-gamers notwithstanding — but the movie comes close to regarding it as such. — Peter Tonguette, The Washington Examiner, 27 June 2026

The result feels comforting without skewing childish. — Lauren Jarvis-Gibson, Sacbee.com, 12 June 2026

Democrats could dismiss this line of attack as childish and homophobic. — Hanna Rosin, The Atlantic, 11 June 2026