Related Clues:

• Contented utterance
• 'Now I get it'
• ''Understood''
• 'Alright, I get it now'
• ''I understand''
• Sound at a spa
• Sigh of relief
• "What a relief!"
• 'I see...well...all right'
• 'Say ___'
• Reluctant assent
• Opening sound?
• ''Understood!''
• "That feels great!"
• Contented sigh