Related Clues:

• 'Search me'
• 'Well, perhaps ...'
• Indifferent response
• 'Haven't a clue!'
• 'I have no idea'
• 'So what?'
• "Big deal"
• 'If you say so'
• 'Whatever ...'
• Shrugger's word
• 'Who cares?'
• "Beats me"
• "Who knows?"
• "Reckon so"
• "Don't ask me"