Related Clues:

• Unmatched, like socks
• Not lumpy
• Lacking a partner
• Like 2, or 2-2
• Unmatched, as a sock
• Zero-zero or 30-30, e.g.
• Caught up on debts
• About the same
• Like two
• Matchless, e.g.
• Nose to nose
• Unlike 666
• Without any more need for payback
• 50-50
• Needing a tie-breaker