Black Country is uninspiring (5)
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I believe the answer is:
bland
'uninspiring' is the definition.
(bland can mean uninspiring or dull)
'black country' is the wordplay.
'black' becomes 'b' (as in pencil classifications).
'country' becomes 'land' (synonyms).
'b'+'land'='BLAND'
'is' acts as a link.
(Other definitions for bland that I've seen before include "Boringly characterless" , "Mild; dull" , "Suave" , "Unruffled but unstimulating" , "Flavourless" .)