Money, initially, is suitable to steal (14)
I believe the answer is:
misappropriate
'steal' is the definition.
(misappropriating is a kind of stealing)
'money initially is suitable' is the wordplay.
'money initially' becomes 'mis' (I can't explain this - if you can you should give a lot more credence to this answer).
'is suitable' becomes 'appropriate' (synonyms).
'mis'+'appropriate'='MISAPPROPRIATE'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for misappropriate that I've seen before include "Lift" , "Unfairly take for one's own use" , "embezzle" , "Take dishonestly for one's own use" , "Nick" .)