Miser making score go awry (7)
I believe the answer is:
scrooge
'miser' is the definition.
(I know that Scrooge is a miser)
'score go awry' is the wordplay.
'awry' indicates anagramming the letters.
'score'+'go'='scorego'
'scorego' with letters rearranged gives 'SCROOGE'.
'making' is the link.
(Other definitions for scrooge that I've seen before include "Skinflint Ebenezer" , "Miser in Christmas tale" , "Mean person" , "Dickens's miser" , "He saw Marley's ghost" .)