schoolgirlish

Example:In contrast to her schoolgirlish attitude, she had a mature and responsible approach to her studies.

Definition:Developed or brought to a state of full growth or advancement, especially in a way that is considered healthy or beneficial, in terms of behavior, development, or outlook.

Example:While she may have been schoolgirlish in her outlook, her sophisticated wit was evident in her dealings with others.

Definition:Having or showing knowledge of, or experience in, the world in a practical, realistic, and shrewd way, often implying a certain worldliness and maturity, as an outlook or behavior.

Example:Compared to her schoolgirlish self, she had matured into a more adult woman with more refined tastes and a more complex personality.

Definition:United in the same class or group, especially by having reached a certain age and thus having certain characteristics or responsibilities, such as taking on adult responsibilities or behavior.