Impulse to fix staple? (7)
I believe the answer is:
caprice
'impulse' is the definition.
(synonyms)
'fix staple?' is the wordplay.
'fix' becomes 'cap' (I can't justify this - if you can you should believe this answer much more).
'staple?' becomes 'rice' (I've seen this in another clue).
'cap'+'rice'='CAPRICE'
'to' is the link.
Can you help me to learn more?
(Other definitions for caprice that I've seen before include "A whim or piece of fancy" , "Sudden change of mind" , "Sudden whim" , "Sudden mood change" , "Whimsy" .)