Childishness
01
幼稚, 孩子气
the behavior of being immature, overly playful, or exhibiting traits typically associated with children
例子
Despite his age, he showed a lot of childishness when things did n’t go his way.
尽管他的年龄，当事情不按他的方式进行时，他表现出了很多孩子气。
