Related Clues:

• Canyon sound
• 'Art is a delayed ___': Santayana
• Canyon comeback
• Reverberate
• Recording effect
• Iterate
• It's been said before
• Bat's navigation aid
• It may bounce off walls
• Bounce back
• Unoriginal reply
• Resounding response
• It may be off the wall
• Sonar comeback
• Off-the-wall comeback?