Shame sappers during argument (9)
I believe the answer is:
disrepute
'shame' is the definition.
(thesaurus)
'sappers during argument' is the wordplay.
'sappers' becomes 're' (Royal Engineers).
'during' is an insertion indicator.
'argument' becomes 'dispute' (I've seen this before).
're' going within 'dispute' is 'DISREPUTE'.
(Other definitions for disrepute that I've seen before include "Ill fame" , "Ignominy" , "State of being held in low public esteem" , "get a bad name" .)