Auditor administered corps creating resentment (7)
I believe the answer is:
rancour
'resentment' is the definition.
(synonyms)
'auditor administered corps' is the wordplay.
I cannot quite see how this works, but
'administered' could be 'ran' (I've seen this before) and 'ran' is located in the answer.
'corps' could be 'c' (military abbreviation for corps) and 'c' is located in the answer.
The remaining letters 'our' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'creating' is the link.
Can you help me to learn more?
(Other definitions for rancour that I've seen before include "Malice" , "Bitter resentment" , "Antipathy" , "Bitter feeling or ill will" , "Spiteful ill-feeling" .)