Related Clues:

• "I see!"
• Sigh in a jacuzzi
• "The wait is over!"
• It may be said to a doctor
• 'This has been a long time coming!'
• "That feels great!"
• Contented sigh
• Sound associated with a 40-Across
• Patient reply?
• Pleased reaction
• Massage sound
• Indication that one is being rubbed the right way
• Sighing sound
• ''That feels g-o-o-o-d!''
• "That's it!"