Related Clues:

• ''That's it!''
• Sound of relief
• Sound of contentment
• ''That's the spot!''
• 'That's nice!'
• Reaction to a back rub, maybe
• Excited exclamation
• 'How nice!'
• Satisfied sound
• Sound of delight
• Delighted reaction
• 'Nice!'
• Sighed word
• Checkup sound
• Delighted exclamation