Related Clues:

• "Incredible!"
• ''Unbelievable!''
• '60s exclamation
• "That's unbelievable!"
• "I'm amazed!"
• "That's incredible!"
• "Gee whiz!"
• ''That's amazing!''
• “Groovy, man!”
• "Gee, that's amazing!"
• ''That's incredible!''
• 'I was not expecting that'
• ''This boggles my mind!''
• 'That's so cool!'
• ''Unreal!''