Precocious (adjective)

1. Showing mature qualities at an unusually early age.
2. Developing certain abilities or understanding earlier than usual.

Origin:

From latin praecox ("ripe before the time, prematur.e")

Examples:

1. She was a precocious child, reading at a very young age.
2. The precocious student was able to solve advanced mathematical problems with ease.
3. He was a precocious talent, showing great skill in music at a young age.
4. The precocious child was already interested in science and technology.
5. The precocious athlete was already competing at a high level at the age of 13.