Spare more (5)
I believe the answer is:
extra
I believe this is a double definition.
'spare' is the first definition.
(I know that spare can be written as extra)
'more' is the second definition.
(I've seen this in other clues)
(Other definitions for extra that I've seen before include "Accessory" , "Bit part actor" , "one added to the score" , "Bonus; surplus" , "Not a standard item" .)