Related Clues:

• 'You could've knocked me over with a feather!'
• Command to a horse
• ''Omigosh!''
• Word from Beaver Cleaver
• Fancy that!
• Wow!
• Relative of 'hmmm'
• "You don't say!"
• 'I'll be darned!'
• Kin of "Golly!"
• Word before "I don't know"
• Whiz lead-in
• "Good grief!"
• 'Well, I'll be!'
• "Aw" follower