Sleazy or squalid (6)
I believe the answer is:
sordid
I believe this is a double definition.
'sleazy' is the first definition.
(I know that sleazy can be written as sordid)
'squalid' is the second definition.
(I know that squalid can be written as sordid)
(Other definitions for sordid that I've seen before include "'Dirty, morally degrading (6)'" , "Unclean" , "Base and grubby" , "Mean and grubby" , "Seedy, squalid" .)