A phoney journalist is humiliated (7)
I believe the answer is:
ashamed
'is humiliated' is the definition.
(I've seen this before)
'a phoney journalist' is the wordplay.
'phoney' becomes 'sham' (I've seen this before).
'journalist' becomes 'ed' (short for editor).
'a'+'sham'+'ed'='ASHAMED'
(Other definitions for ashamed that I've seen before include "Having painful regret for behaviour" , "Feeling bad, having done something wrong" , "Afflicted with remorse, feeling sense of wrongdoing" , "Mortified, humbled" , "Sorry" .)