Related Clues:

• Mellowed, in a way
• Allowed to mellow
• Increased one's candle count
• Senescent
• Added years
• Dry-___ (like some steak)
• Got better, like cheddar
• Around a long time
• Yellowing, maybe
• Like most whiskey
• __ beef
• Improved, perhaps
• Got grayer, perhaps
• Turned green, perhaps
• Grew older and wiser