Considerable spruce (4)
I believe the answer is:
tidy
I believe this clue is a double definition.
'considerable' is the first definition.
(as in a tidy sum of money)
'spruce' is the second definition.
(similar in meaning)
(Other definitions for tidy that I've seen before include "Receptacle for odds and ends" , "Shipshape" , "In apple-pie order" , "Neaten" , "Large" .)