Very particular (5)
I believe the answer is:
fussy
'very particular' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for fussy that I've seen before include "Overprecise" , "Busy" , "Fastidious, concerned about minor details" , "Finicky, picky" , "Cluttered with detail or exacting about details" .)