Related Clues:

• A truism - there's no more to be said
• It's concluded a statement of the obvious
• Final comment, a statement of the obvious
• "So I was wrong!"
• In-your-face response
• There is nothing more to say about the Yorkshire headgear going twice round square
• Extremely thorough moreover checking seconds - there's nothing more to be done
• 'How ___ look?'
• Words before dare or ever
• Opposite of ''Sorry!''
• 'Boy, ___!'
• 'End of discussion'
• Sarcastic 'Sorry!'
• Sheepish admission
• *"End of discussion!"