Related Clues:

• Potato lifting, except King Edward
• Overturn potato turnover
• Nullify agent turning back on mole
• Agent gets upset over point in veto
• Defeat seen on television by right back
• Refute - disprove
• Turn on its head
• Refuse to give
• Nullify - deny the existence of
• Cause to have no effect
• Reject as true
• Claim or prove to be false
• Don't fess up to
• Brute (anag)
• Make a counterargument