Decorate without being clumsy (9)
I believe the answer is:
graceless
'clumsy' is the definition.
(I've seen this before)
'decorate without' is the wordplay.
'decorate' becomes 'grace' ('grace' can be a synonym of 'decorate'**).
'without' becomes 'less'.
'grace'+'less'='GRACELESS'
'being' acts as a link.
(Other definitions for graceless that I've seen before include "Indecorous" , "Lacking elegance" , "clumsy" , "Awkward" .)