What does 'jejune' suggest about maturity?

The term "jejune" is most commonly used to describe something that is simplistic, dull, or lacking in substance. In terms of maturity, it suggests a deficiency in depth or complexity, indicating a lack of maturation in thought, character, or experience. When someone describes an idea, approach, or even a person as jejune, they are implying that it lacks sophistication or the qualities one would expect from a more mature perspective.

For instance, a jejune argument might overlook important nuances or fail to engage with deeper issues, leading to the conclusion that it represents a less mature understanding of the topic. Thus, aligning this definition with the concept of maturity suggests that "jejune" explicitly conveys the absence of maturity.