infantilism
英 [ɪnˈfæntɪlɪzəm]
美 [ɪnˈfæntɪlɪzəm]
n. (成人的)幼稚病
牛津词典
noun
- （成人的）幼稚病
the fact of adults continuing to behave like children, in a way that is not normal
英英释义
noun
- infantile behavior in mature persons
- an abnormal condition in which an older child or adult retains infantile characteristics