grow

(verb): To become larger, to increase in magnitude.
(verb): To appear or sprout.
(verb): To develop, to mature.
(verb): To cause or allow something to become bigger, especially to cultivate plants.
(verb): To assume a condition or quality over time.
(verb): To become attached or fixed; to adhere.

Children grow quickly.
A long tail began to grow from his backside.
As I grew throughout adolescence, I came to appreciate many things about human nature.
Have you ever grown your hair before?
The boy grew wise as he matured.