in·fan·tile
adjective/ˈɪnfəntaɪl/
/ˈɪnfəntaɪl/
- (disapproving) typical of a small child (and therefore not suitable for adults or older children)
婴幼儿特有的；孩子气的 - infantile jokes
幼稚的玩笑
- infantile jokes
- [only before noun] (formal or specialist) connected with babies or very young children
婴儿的；幼儿的
Word Originlate Middle English: from French, or from Latin infantilis, from infans, infant- ‘unable to speak’, from in- ‘not’ + fant- ‘speaking’ (from the verb fari).