Related Clues:

• Having a smooth surface
• Adjective for 83 Down
• With neither profit nor loss
• Equal in points
• Hardly bumpy
• Not varying
• Not one, but two and four
• What feuding families seek to get
• ''___ I know that!''
• Like 57-Across
• Get __ (exact revenge)
• Short joke
• Tied, in scores
• Like 10, 20 and 30
• Perfectly balanced