Possible Clues:

• Subdue
• Prove too strong for
• Prove bad debtor's beat
• Subdue by greater strength or numbers
• Subjugate
• Subdue - beat
• Defeat, or we prove to be beaten
• Defeat with superior strength
• 'Lord! I am afraid I shall be --ed by her beauty' (Sheridan, The Duenna)
• Cube, for example, by past master?