Related Clues:

• Breathy sound
• 'Oh, well' noise
• This might follow a bad pun
• -- of relief
• [That's an old one!]
• Relief sound
• Lovelorn one's utterance
• Dramatic exhalation
• Indication of longing
• Wistful sound
• Sound of longing
• Exhaled response
• 'Ah, whatever' follower
• "Alas"
• "Ah, whatever" follower