- (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
- [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).