A bogus journalist, embarrassed (7)
I believe the answer is:
ashamed
'embarrassed' is the definition.
(similar in meaning)
'a bogus journalist' is the wordplay.
'bogus' 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 "Abashed - embarrassed" , "Overcome by remorse or guilt" , "Sorry" , "hanging his head" , "Having painful regret for behaviour" .)