Scoff at journalist's return journey (6)
I believe the answer is:
deride
'scoff at' is the definition.
(I've seen this in another clue)
'journalist's return journey' is the wordplay.
'journalist' becomes 'ed' (short for editor).
'return' says the letters should be written in reverse.
'journey' becomes 'ride' (ride is a kind of journey).
'ed' backwards is 'de'.
'de'+'ride'='DERIDE'
(Other definitions for deride that I've seen before include "Knock" , "Jeer, belittle" , "Mock and jeer" , "Mock, scorn" , "Ridicule, scoff at" .)