Quality attire, but misshapen (9)
I believe the answer is:
attribute
'quality' is the definition.
(thesaurus)
'attire but misshapen' is the wordplay.
'misshapen' indicates anagramming the letters.
'attire'+'but'='attirebut'
'attirebut' with letters rearranged gives 'ATTRIBUTE'.
(Other definitions for attribute that I've seen before include "Credit - property" , "Assign" , "Point" , "Impute - quality" , "Ascribe, impute" .)