Supplies? Bad-tempered about Spain blocking most of remainder (9)
I believe the answer is:
resources
'supplies?' is the definition.
(I've seen this before)
'bad-tempered about spain blocking most of remainder' is the wordplay.
'bad-tempered about spain' becomes 'source' (I can't justify this - if you can you should believe this answer much more).
'blocking' means one lot of letters goes inside another.
'most of' means to remove the last letter.
'remainder' becomes 'rest' (synonyms).
'rest' with its final letter taken off is 'res'.
'source' put into 'res' is 'RESOURCES'.
Can you help me to learn more?
(Other definitions for resources that I've seen before include "Personal attributes" , "provides money for" , "funds" , "Teaching materials" , "capital!" .)