For age:
* Matanda - This is the most common term for "old" or "elderly," but it can also be used for "mature" in the sense of being older.
* May edad na - This literally means "with age," and is a more polite way of saying "old" or "mature."
For development:
* May pagka-mature - This means "somewhat mature" and suggests a degree of maturity.
* Malaki na ang ulo - This literally means "the head is big," and is an idiom for being mature or wise.
* Naka-unawa - This means "understanding," and can be used to describe someone who has matured in their thinking.
For fruits and plants:
* Hinuhod - This refers to fruits or plants that are fully ripe or matured.
For specific contexts:
* Matured (English word) - This is commonly used in business and finance contexts.
The best Tagalog term will depend on the specific context and the nuance you want to convey.