Related Clues:

• 'March!' opener
• Past the freshness date
• Hat or maid leader
• Fossilized
• Word with guard or goat
• The 'O' in G.O.P.
• Past its prime
• Like an octogenarian
• No longer new or interesting
• Like centenarians
• Up there, say
• Long-lived
• So last year
• Like an antique
• Like the hills