Related Clues:
- Unlike spring chickens
- Brought to desired maturity
- Any number of years old?
- Like Glory?
- Like bock beer
- Left childhood
- Got long in the tooth
- Like single-malt scotch
- Got a little older
- Old silver mine found at last
- Lycée attendee
- Like sharp Canadian cheddar
- Like cheese or whiskey
- Mellowed, perhaps
- Impressionist missing last letter looks back over the hill?