Related Clues:

• ''I didn't know that!''
• Whiz starter
• ''No kidding!''
• ''Gosh!''
• Expression of surprise
• Relative of 'Hmm ...'
• '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!'