Related Clues:

• 'That feels good!'
• 'That makes sense'
• Sound of satisfaction
• Sigh of relief
• Sound of contentment
• Satisfied sound
• Patient response?
• Opening remark
• Contented sound
• Contented utterance
• Sound at a spa
• Sigh of relief
• "What a relief!"
• 'Say ___'
• Opening sound?