Said to be an absolute boss in journalism (7)
I believe the answer is:
uttered
'said' is the definition.
(I've seen this in another clue)
'absolute boss in journalism' is the wordplay.
I cannot really understand how this works, but
'absolute' could be 'utter' (similar in meaning) and 'utter' is found within the answer.
'boss' could be 'ed' (short for editor - newspaper boss) and 'ed' is present in the answer.
No letters remain.
This may be the basis of clue (or it may be nonsense).
'to be an' acts as a link.
Can you help me to learn more?
(Other definitions for uttered that I've seen before include "In law, put forged money into circulation" , "Said (something)" , "Spoke and put into circulation" , "Spoken" , "Pronounced" .)