Echo
Middle English: from Old French or Latin, from Greek ēkhō, related to ēkhē ‘a sound’.
wiktionary
From Middle English eccho, ecco, ekko, from Medieval Latin ecco, from Latin echo, from Ancient Greek ἠχώ(ēkhṓ), from ἠχή(ēkhḗ, “sound”).
etymonline
echo (n.)
mid-14c., "sound repeated by reflection," from Latin echo, from Greek echo, personified in classical mythology as a mountain nymph who pined away for love of Narcissus until nothing was left of her but her voice, from or related to ekhe "sound," ekhein "to resound," from PIE *wagh-io-, extended form of root *(s)wagh- "to resound" (source also of Sanskrit vagnuh "sound," Latin vagire "to cry," Old English swogan "to resound"). Related: Echoes. Echo chamber attested from 1937.
echo (v.)
1550s (intrans.), c. 1600 (trans.), from echo (n.). Related: Echoed; echoing.
