What is another word for childish?
Pronunciation: [t͡ʃˈa͡ɪldɪʃ] (IPA) 
Childish is often associated with immaturity and naivety. Synonyms for the word childish include juvenile, infantile, puerile, immature, and naive. Juvenile is often used to describe someone who acts in a way that is characteristic of young people. Infantile is used to describe someone who behaves like a young child, often in a way that is inappropriate for their age. Puerile is often used to describe something that is silly or immature, often for humorous effect. Immature is used to describe someone who lacks emotional or intellectual maturity. Naive is used to describe someone who is innocent or gullible.
