Related Clues:

• Is permissive
• ''Sure, we should''
• 'We're in!'
• "Why don't we?!"
• "Nice thinking!"
• 'I'm game if you are!'
• Tennis umpire's calls
• Restricts? No, U-turn
• 'We should do it!'
• Agreeable answer to an invitation
• Some bad serves
• Start of a suggestion
• 'Ooh, let's do that!'
• ''I'm up for it!''
• Badminton do-overs