But really, the original crash should not have been an echo.
Otherwise the echo chambers of modern media make it too easy for people to find dubious information confirming their worst fears.
The last thing an incoming administration needs is to stage a long diplomatic harangue about nothing, inside an echo chamber.
mid-14c., from Latin echo, from Greek echo, personified as a mountain nymph, from or related to ekhe "sound," ekhein "to resound," from PIE root *swagh- "to resound" (cf. Sanskrit vagnuh "sound," Latin vagire "to cry," Old English swogan "to resound"). Related: Echoes.
1550s, from echo (n.). Related: Echoed; echoing.