инфантилен angolul

childish▼(behaving immaturely)
adjective
[UK: ˈtʃaɪl.dɪʃ] [US: ˈtʃaɪl.ˌdɪʃ]

infantile▼(childish; immature)
adjective
[UK: ˈɪn.fən.taɪl] [US: ˈɪn.fən.təl]