Related Clues:

• 'No idea'
• 'I haven't a clue'
• ''Search me''
• "Beats me," slangily
• "I give up!"
• ''I have no idea!''
• 'Hell if I know'
• 'I haven't the foggiest!'
• ''Got me!''
• ''I'm stumped!''
• "No idea"
• 'Haven't the foggiest'
• "Search me!"
• 'Good question'
• [Shrug]