Related Clues:

• Preposterous
• Huge success
• "That's amazing!"
• Knock one's socks off
• Fictitious
• Cry of excitement
• "Awesome!"
• Exclamation
• Response to pyrotechnics
• Sound of delight
• 'Unbelievable!'
• 'Nice!'
• Gasp of delight
• "Oh wow!"
• "Holy smokes!"