precocious
[pri-koh-shuhs]
adjective
1. unusually advanced or mature in development, especially mental development.
a precocious child.
2. prematurely developed, as the mind, faculties, etc.
3. of or relating to premature development.
4. Botany. flowering, fruiting, or ripening early, as plants or fruit.
bearing blossoms before leaves, as plants. appearing before leaves, as flowers.