Repugnant to the French in new accommodation (10)
I believe the answer is:
nauseating
'repugnant' is the definition.
(thesaurus)
'to the french in new accommodation' is the wordplay.
'to the french' becomes 'au' ('to the' in French).
'in' indicates putting letters inside.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'accommodation' becomes 'seating' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'n'+'seating'='nseating'
'au' put into 'nseating' is 'NAUSEATING'.
Can you help me to learn more?
(Other definitions for nauseating that I've seen before include "Stomach-turning" , "Loathsome" , "being hard to keep down" , "Revolting" , "arousing unpleasant feeling" .)