Suit some cut badly (7)
I believe the answer is:
costume
'suit' is the definition.
(thesaurus)
'some cut badly' is the wordplay.
'badly' indicates anagramming the letters (letters in the wrong order).
'some'+'cut'='somecut'
'somecut' anagrammed gives 'COSTUME'.
(Other definitions for costume that I've seen before include "Rig" , "Actor's set of clothes" , "Actor's attire" , "(Historic etc) dress" , "Clothing" .)