More miserly (6)
I believe the answer is:
meaner
'more miserly' is the definition.
('mean' can be a synonym of 'miserly')
This is all the clue.
(Other definitions for meaner that I've seen before include "Rename as being more stingy" , "More miserly" , "Rename (anag.)" , "More stingy or parsimonious" , "Rename as being stingier" .)