Pompous, stuffy (6)
I believe the answer is:
stodgy
This clue is a double definition.
'pompous' is the first definition.
(I've seen this in another clue)
'stuffy' is the second definition.
(synonyms)
(Other definitions for stodgy that I've seen before include "Heavy and sticky" , "Boringly conventional" , "not easily assimilated" , "Indigestibly heavy" , "Describes excessively starchy food" .)