Related Clues:

• Say 'No, I didn't'
• Attempt to disprove
• Make null and void
• Last word of 'For He's a Jolly Good Fellow'
• Counterpunch, in a way
• "... that nobody can ___"
• Opposite of grant
• Opposite of allow
• Render invalid
• Don't allow
• Say ain't so
• Counter an argument
• "... which nobody can ___"
• Opera by Puccini
• "I didn't do it!"