matur

Fully grown or developed; to become ripe or complete

The state of being fully developed; the due date of a financial obligation

Happening before the proper or expected time; born before full term

Before the expected or proper time; too early

Not fully grown or developed; childish in behavior

The state of being immature or not fully developed

The state of being premature

In a mature and sensible manner

Fully developed; due for repayment