Klutzy (5)
I believe the answer is:
inept
'klutzy' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for inept that I've seen before include "Awkward, clumsy" , "Incompetent or gauche" , "rubbish" , "Hopeless; bungling" , "Lousy" .)