Consistency in contract (9)
I believe the answer is:
agreement
I believe this clue is a double definition.
'consistency' is the first definition.
(thesaurus)
'contract' is the second definition.
(I've seen this before)
'in' acts as a link.
(Other definitions for agreement that I've seen before include "in sympathy" , "concert" , "Compact, accord" , "State of being consistent" , "legal contract maybe" .)