Related Clues:

• Unsurpassable
• Deserving a blue ribbon
• Outcompete
• A-No. 1
• With 48-down, Oscar category
• Oscar superlative
• What father knows?
• Supreme
• Better than better
• Superlatively good
• Letter sign-off
• Second-to-none
• Like a 63 Across?
• Most helpful
• Informal letter signoff