Nervous journalist has good year after (4)
I believe the answer is:
edgy
'nervous' is the definition.
('edgy' can be a synonym of 'nervous')
'journalist has good year after' is the wordplay.
'journalist' becomes 'ed' (short for editor).
'has' means one lot of letters go next to another.
'good' becomes 'g' (abbreviation).
'year' becomes 'y'.
'after' means one lot of letters go next to another.
'ed'+'g'+'y'='EDGY'
(Other definitions for edgy that I've seen before include "Nervous and tense, irritable" , "Nervous; jumpy" , "Sharp in outline" , "Uneasy" , "ready to flap?" .)