Endorsed as a fine, resolute pressman (8)
I believe the answer is:
affirmed
'endorsed' is the definition.
(I've seen this before)
'a fine resolute pressman' is the wordplay.
'a fine' becomes 'af' (I've seen this in other clues).
'resolute' becomes 'firm' ('firm' can be similar in meaning to 'resolute').
'pressman' becomes 'ed'.
'af'+'firm'+'ed'='AFFIRMED'
'as' is the link.
(Other definitions for affirmed that I've seen before include "swore" , "Stated positively and firmly" , "Stated as a fact" , "Stated publicly" , "Stated emphatically" .)