Clumsiness, lack of skill (9)
I believe the answer is:
ineptness
I believe this is a double definition.
'clumsiness' is the first definition.
(I know that clumsiness can be written as ineptness)
'lack of skill' is the second definition.
(I've seen this before)
(Other definitions for ineptness that I've seen before include "Lack of suitability" , "Clumsiness, lack of skill" , "Awkwardness, clumsiness" .)