Racket in English final (6)
I believe the answer is:
ending
'final' is the definition.
(thesaurus)
'racket in english' is the wordplay.
'racket' becomes 'din' (both can mean a loud noise or disturbance).
'in' is an insertion indicator.
'english' becomes 'eng' (abbreviation).
'din' inserted within 'eng' is 'ENDING'.
(Other definitions for ending that I've seen before include "Termination, conclusion" , "ultimately" , "Finale" , "terminal" , "Cessation" .)