Compensated for having given material assistance (6)
I believe the answer is:
repaid
'compensated for' is the definition.
'repaid' can be an answer for 'compensated' (I've seen this before). I'm not certain of the 'for' bit.
'given material assistance' is the wordplay.
'given' means one lot of letters go next to another.
'material' becomes 'rep' (rep is a kind of material).
'assistance' becomes 'aid' (synonyms).
'rep' put next to 'aid' is 'REPAID'.
'having' is the link.
Can you help me to learn more?
(Other definitions for repaid that I've seen before include "Refunded or rewarded" , "Recompensed" , "no longer outstanding" , "Returned" , "Gave back money owed" .)