Related Clues:

• Direct-mail response sticker
• Green light
• 'That's it!'
• Nay canceler
• Cry of success
• Aye-aye
• 'You betcha!'
• 'Mm-hmm!'
• Sanction
• Proposal response
• Toady's response
• 'So that's it!'
• Vote of support
• 'Things are becoming clear'
• 'Indubitably'