Adjust nothing I provided in regular payment (6)
I believe the answer is:
orient
'adjust' is the definition.
(thesaurus)
'nothing i provided in regular payment' is the wordplay.
'nothing' becomes 'o' (looks like zero - 0).
'provided in' means one lot of letters goes inside another.
'regular payment' becomes 'rent' (rent is a kind of regular payment).
'i' inserted within 'rent' is 'rient'.
'o'+'rient'='ORIENT'
(Other definitions for orient that I've seen before include "Famous express" , "Adjust to surroundings" , "Countries east of the Mediterranean" , "Rising earlier" , "Acquaint with position" .)