Related Clues:

• Expression of awe
• 'That's surprising'
• "That's surprising"
• Expletive from Beaver Cleaver
• 'Huh, fancy that!'
• Letter read out — gosh!
• Skeptic's query
• 'My goodness'
• Exclamation from 43-Across
• "Ain't that somethin'?"
• ___ whiz!
• "___ whillikers"
• "Well, I'll be!"
• Seventh letter of the alphabet
• "How about that?"