Related Clues:

• 'Who knows?!'
• Uninspired
• Remark of uncertainty
• ''Search me''
• "Beats me," slangily
• 'Ya got me!'
• "I give up!"
• ''Suppose so''
• ''How should I know?''
• 'Um ... sure'
• Tepid assent
• "Haven't a clue!"
• What the clueless have
• "It's not that exciting"
• 'Hell if I know'