A resounding comeback (4)

I believe the answer is:

echo

This clue is a double definition.

'a resounding' is the first definition.
(thesaurus)

'comeback' is the second definition.
(I've seen this in another clue)

(Other definitions for echo that I've seen before include "repeated answer" , "Trace call" , "Repetition of sound" , "Reproduction" , "Reiterate" .)

I've seen this clue in The Irish News.

Want a hint initially instead of a full solution? Install my app