Related Clues:

• "Oh wow!"
• "Wow!"
• "Goodness!"
• "Golly!"
• 'Man!'
• “How about that?!”
• Ten C-notes
• "Fancy that!"
• "I'm impressed!"
• "Shucks!"
• "Go right, mule!"
• Exclamation in 17, 23, 50 and 61-Across
• "Oh my!"
• "No kidding!"
• Awed one's reaction