Related Clues:
- Bangs, yells, sirens, etc
- Malfunction indicators, perhaps
- Noises, essentially
- Poltergeist's output
- Bangs and clangs
- Unmusical sounds?
- Some urban pollutants
- They may keep you awake at night
- Creak, squeak, and shriek
- More than one unwanted sound is conveyed in refusals
- Bangs but not eyebrows, say
- Tennis shoe missing? Then, rackets!
- Various cacophonies
- They're heard but not seen
- Bumps in the night, e.g