Related Clues:

• Thoughtful sound
• 'Not sure how I feel about that...'
• 'That's odd ...'
• Chin scratcher's utterance
• Contemplative comment
• 'You might just have a point ...'
• Sound of consideration
• 'Ver-r-ry interesting!'
• 'Let me think ... '
• What a deep thinker might mumble
• 'Let's see ... '
• 'I'm thinking ... '
• "I'm thinking ... "
• 'Lemme think ...'
• Ponderer's sound