Singular vehicle used by journalist, frightened (6)
I believe the answer is:
scared
'frightened' is the definition.
(scared means frightened or fearful)
'singular vehicle used by journalist' is the wordplay.
'singular' becomes 's' (abbreviation sometimes used in dictionaries).
'vehicle' becomes 'car' (car is a kind of vehicle).
'used by' is a charade indicator (letters next to each other).
'journalist' becomes 'ed' (short for editor).
's'+'car'+'ed'='SCARED'
(Other definitions for scared that I've seen before include "Fearful, anxious" , "Afraid of cedars" , "Nervous" , "having kittens" , "Afraid, anxious" .)