Mark gets journalist afraid (6)
I believe the answer is:
scared
'afraid' is the definition.
(similar in meaning)
'mark gets journalist' is the wordplay.
'mark' becomes 'scar' (mark left by an injury).
'gets' is a charade indicator (letters next to each other).
'journalist' becomes 'ed' (short for editor).
'scar'+'ed'='SCARED'
(Other definitions for scared that I've seen before include "Frightened or intimidated" , "in fright" , "Afraid, anxious" , "Thing which precipitates an event" , "Frightened or apprehensive" .)