Related Clues:
- Heckler's comment
- Surprising sound within 'kaboom'
- Initially glimpsed weaving machine in partial darkness
- Haunted house holler
- Bottom of cooling tower is dark
- Good to take on threatening shape in darkness
- Exclamation to startle someone
- Dark brush changing hands
- "That performance was terrible!"
- Spooky cry
- Jeer from a disapproving fan
- Bad routine reaction
- Sound of audience's disapproval
- Heckling shout
- Stadium jeer