Related Clues:

• Up, as a vote
• 'Why not?'
• Go-ahead
• 'Ah!'
• Expression of understanding
• 'Undoubtedly'
• 'Clear as day'
• Aye
• Exclamation of affirmation
• 'Gotcha'
• Put to work
• See 11-Down
• 'You said it!'
• Sycophant's response
• Thumbs up