More impoverished (7)
I believe the answer is:
needier
'more impoverished' is the definition.
('needy' can be a synonym of 'impoverished')
This is all the clue.
(Other definitions for needier that I've seen before include "poor, ultimately - more so than others" , "More disadvantaged" , "Poorer" , "Wanting more" , "more impoverished" .)