Endured final with journalist (6)
I believe the answer is:
lasted
'endured' is the definition.
('last' can be a synonym of 'endure')
'final with journalist' is the wordplay.
'final' becomes 'last' (synonyms).
'with' means one lot of letters go next to another.
'journalist' becomes 'ed' (short for editor).
'last'+'ed'='LASTED'
(Other definitions for lasted that I've seen before include "Kept going" , "Endured, survived" , "Persisted, endured" , "Continued for some time, endured" , "Continued, being salted" .)