Gloomy cellar - push for redecoration (10)
I believe the answer is:
sepulchral
'gloomy' is the definition.
(sepulchral means tomb-like)
'cellar push for redecoration' is the wordplay.
'for redecoration' indicates anagramming the letters.
'cellar'+'push'='cellarpush'
'cellarpush' is an anagram of 'SEPULCHRAL'.
(Other definitions for sepulchral that I've seen before include "offering gloomy tones" , "from the grave" .)