Related Clues:

• 'I didn't expect that'
• ''Say that again?''
• 'Excuse me?'
• "Say that again?"
• 'How about this ...?'
• 'Seriously?!'
• At-a-loss utterance
• With 54-Down, start of a historic telegraph message
• 'Say that again?'
• Thaw out, eh?
• 'How about if ...?'
• Eh?
• Word from the hard-of-hearing
• 'I beg your pardon?'
• 'You wanna run that by me again?'