An example of mature is someone who behaves appropriately and doesn't throw a temper tantrum if he doesn't get his way.
An example of mature is a full grown plant.
A mature plan of action.
Mature for her age.
The child's judgment matures as she grows older.
A mature scheme.
Mature germ cells.
A mature bond.
Origin of mature
- Middle English from Old French from Latin mātūrus mā-1 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition