Related Clues:

• Groan associate
• Be overly picky
• Ghostly utterance
• Sound of pain
• Ornamental pond fish
• Murmur of discontent
• Grievous sound
• Complain, so to speak
• Sound of suffering
• Sound of pleasure, perhaps
• Koi, for one
• Climactic sound?
• Spooky sound
• Troubled sound
• Ontario lake