Soulless and stupid about one rug (9)
I believe the answer is:
inanimate
'soulless' is the definition.
(thesaurus)
'stupid about one rug' is the wordplay.
'stupid' becomes 'inane' (I've seen this before).
'about' is an insertion indicator.
'one' becomes 'i' (Roman numeral).
'rug' becomes 'mat' (both are floor coverings).
'i'+'mat'='imat'
'inane' enclosing 'imat' is 'INANIMATE'.
'and' acts as a link.
(Other definitions for inanimate that I've seen before include "Showing no feeling" , "Not alive" , "unable to move" , "Unlikely to move" , "Showing no sign of life" .)