Related Clues:

• 'That feels good!'
• 'Aha!'
• 'Understand?'
• 'I understand!'
• Cry of success
• 'Yeah, sure'
• Understood
• 'Oh, I see'
• A patient may say it
• Catch phrase?
• 'That makes sense'
• 'I see'
• Sound of satisfaction
• 'Understood'
• Sigh of relief