Possible Clues:

• Disallow deliveries to canon
• Not sustain, as an objection
• Disallow by using one's superior authority
• Turn down (objection)
• Deny an objection
• Opposite of 'sustain,' in a courtroom
• Reject proposals concerning government
• Reject
• Reject (decision) using superior authority
• Countermand one of the laws of cricket?