Back talk? (4)
'back talk' is the definition.
(I've seen this in another clue)
This is all the clue.
(Another definition for sass that I've seen is " Cheek".)
'back talk?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for echo that I've seen before include "Reminder" , "one catches on the rebound?" , "Reflection of sound - Greek nymph" , "Imitate -- a nymph" , "Sound following" .)