Related Clues:

• Jet effect
• Sound reflection
• Sound that's coming back?
• Utter an identical sentiment
• Yodeler's feedback, perhaps
• Acoustical engineer's concern
• Nymph spurned by Narcissus
• It will return your calls
• Cause-effect gap
• Sonic rebound
• Response time
• Say the same thing as
• Dolphin's navigation aid
• Toyota sedan
• Nymph who pined away