adolesce

Example:The teenager developed quickly into a responsible young adult.

Definition:to grow, change, or increase in size, quantity, or complexity; to become

Example:Her body matured just as she was finishing high school.

Definition:to become physically or mentally mature; to become adult

Example:During adolescence, individuals grow both physically and mentally.

Definition:to become larger or greater in size, quantity, or degree; to become more advanced or developed