Related Clues:

• Chin stroker's comment
• 'Hmm...'
• Ponderer's sound
• Exclamation of contemplation
• 'That's odd...'
• 'I'll need time to think about it'
• 'I wonder...'
• Sound of wheels turning?
• 'I wonder ... '
• "I wonder ... "
• "Let me consider that ..."
• "Good question ..."
• "Let's see ..."
• “Let me think about that...”
• 'Let me think about that . . .'