Sleazy, squalid (6)
I believe the answer is:
sordid
This clue is a double definition.
'sleazy' is the first definition.
(synonyms)
'squalid' is the second definition.
(synonyms)
(Other definitions for sordid that I've seen before include "meanness" , "Squalid and depraved" , "Mean and grubby" , "Squalid - base" , "Squalid, not honourable" .)