Echo (Ἠχώ) is the Greek word for "sound" or "reverberation." **The Oread nymph cursed by Hera to repeat only the last words spoken to her** — punishment for distracting Hera with chatter while Zeus consorted with other nymphs. **She fell in unrequited love with the beautiful Narcissus**, who rejected her; she pined away until only her voice remained. **From her name the modern English word "echo."**
Featured in Ovid's *Metamorphoses* (Book 3).
Echo reduces to six — the number of Narcissus's beloved.