Related Clues:

• On edge
• Physical sound?
• 'How wonderful!'
• 'Impressive!'
• Expression of delight
• 'What a relief!'
• Response to daredeviltry
• Circus sound
• 'Don't stop'
• Sigh of relief
• ''I'm impressed!''
• 'Won-der-ful!'
• [Gasp!]
• La la lead-in
• ''That's it!''