Adjust rent again in country (9)
I believe the answer is:
argentina
'country' is the definition.
(I know that Argentina is a country)
'adjust rent again' is the wordplay.
'adjust' indicates an anagram.
'rent'+'again'='rentagain'
'rentagain' anagrammed gives 'ARGENTINA'.
'in' acts as a link.
(Other definitions for argentina that I've seen before include "Silver country" , "Ta, Grannie, for the odd country" , "part of 18 [SOUTH AMERICA]" , "FIFA World Cup winners in 1978 and 1986" , "South American country" .)