Repair badly (5)
I believe the answer is:
bodge
'repair badly' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for bodge that I've seen before include "spoiled work" , "Repair clumsily (colloq.)" , "Clumsily repair (something)" , "Make or repair badly" , "Unsatisfactory repair" .)