Related Clues:

• With 54-Across, senescence
• Falling apart
• Like relics
• Like much cheese
• Like some wines and cheeses
• Like MacDonald
• __ school
• Mellowing, as Merlot
• Hardly original
• From an earlier time
• Far from new
• Cause of some lines
• With 57-Across, partner of 'Arsenic'
• ___-school (traditional)
• Hardly cutting-edge