Related Clues:

• ''That makes sense''
• Conversational filler
• Jacuzzi sigh
• 'So that's it'
• Contented sound
• Sound from an exam room
• 'Aha'
• 'O-o-oh'
• Therapist's reply
• "Of course"
• Start of a crystal gazer's statement
• A patient response?
• "Ah"
• 'Got it now'
• "So that's it!"