Related Clues:

• 'What?'
• "What's that you say?"
• Sound of confusion
• 'Say what?'
• 'Repeat that, please'
• 'Pardon?'
• “What’d you say?”
• "What did you say?"
• "Come again?"
• 'What?!'
• ''Come again?''
• Interrogative word
• 'Are you serious?!'
• Common question
• 'Are you serious?'