/ˌɪməˈtjʊə(r); US -tʊər ||; ˌɪməˈtυr/adj1 not fully grown or developed 发育未全的；不成熟的: an immature body 发育未全的身躯
2 (used about a person) behaving in a way that is not sensible and is typical of people who are much younger （指人）幼稚的（头脑简单，处事方法欠成熟）: I think he's too immature to take his work seriously. 我认为他还很幼稚，不会认真对待工作。 [OPP] mature 反义词为mature