Related Clues:

• A-No. 1
• With 48-down, Oscar category
• Oscar superlative
• What father knows?
• Supreme
• Better than better
• 'Survivor' slogan word
• Superlatively good
• Best in mental combat
• Letter sign-off
• Second-to-none
• Like a 63 Across?
• Most helpful
• Prove more cunning than
• Informal letter signoff