Related Clues:

• No alternative
• Unambiguous response
• Okay word?
• Buyer's incentive
• "Amen!"
• Affirming word
• One of two definitive responses
• "Sure!"
• Happy cry
• Undoubtedly
• ''Be happy to!''
• "One day only!" event
• Victorious shout
• Crowd attractor
• 16-Down's desire