Related Clues:

• Distressful reaction
• Pained interjection
• "Yipe!" (or an apt title for this puzzle?)
• Reaction to an insect bite?
• Moan and __ (complain)
• Exclamation of sudden pain
• Moan
• Exclamation of pain - that hurt!
• Sound of pain or disapproval
• The sound that sounded as if it had got bigger
• That sounds as if it's got to be Pa in here
• Sounds in pain that has got worse, by the sound of it
• There's nothing in Granny but pain, by the sound of it
• How one has caused hurt, by the sound of it, and got more so, by the sound of it
• The sound of pain has got even more so, by the sound of it