Related Clues:
- It may bounce off walls
- Particle
- Bounce back
- Unoriginal reply
- It may be positive or negative
- Resounding response
- It may be off the wall
- Sonar comeback
- Off-the-wall comeback?
- Recording studio effect
- Output of 31-Down
- It comes back to a spelunker
- It's always charged
- Yodeler's reverberation
- Second coming?