Related Clues:

• Delta follower
• Bounceback
• Off-the-wall response?
• Comeback of a sort
• Chamber phenomenon
• Yodeler's feedback
• Alpine reverberation
• Off-the-wall answer
• Back talk?
• Nymph of myth
• Identical response
• Sonic ricochet
• Silo sound
• Return of a sort
• Off-the-wall response