Pompous and dour, not funny (7)
I believe the answer is:
orotund
'pompous' is the definition.
(I've seen this before)
'dour not funny' is the wordplay.
'funny' indicates anagramming the letters.
'dour'+'not'='dournot'
'dournot' with letters rearranged gives 'OROTUND'.
'and' acts as a link.
(Other definitions for orotund that I've seen before include "Sonorous; pompous" , "Full in sound" , "Pompous (in style)" , "Pompous (oratory)" , "booming" .)