How can "sophomoric" behavior be characterized?

The term "sophomoric" is typically used to describe behavior that is characteristic of a sophomore, particularly in the context of high school or college. This behavior often encompasses a combination of immaturity and a tendency to be overconfident, reflecting a sense of bravado that doesn't yet match a deep understanding or life experience.

When someone is described as exhibiting sophomoric behavior, it suggests they may take themselves too seriously, or act with an inflated sense of their own knowledge and abilities, despite lacking the maturity that would accompany such confidence. This aligns perfectly with the notion of being both immature and overconfident, as it captures the essence of someone who feels advanced or knowledgeable but is still very much in the developmental stages of their growth, thus showcasing immaturity in their actions and outlook.