Related Clues:

• Linkage
• Neckwear item
• Tic-tac-toe outcome, usually
• Attach, in a way
• Casual day no-no
• Casual day no-no
• Bind up
• Hog follower
• Even finish
• Make even
• 20-20, say
• Haberdashery buy
• 50-50, say
• What 21-Across 51-Down is
• Have no loose ends?