Related Clues:

• Satisfied sound
• Charlie Brown utterance
• Weariness giveaway
• Exhale wistfully
• Sound of sorrow
• Resigned sound
• Sound of delight
• Delighted reaction
• 'Nice!'
• Sighed word
• Checkup sound
• Delighted exclamation
• Sound from a hot tub
• Lovelorn utterance
• Plaintive sound