Sleazy, squalid (6)
I believe the answer is:
sordid
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">sleazy</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">squalid</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for sordid that I've seen before include "meanness" , "Squalid and depraved" , "Mean and grubby" , "Squalid - base" , "Squalid, not honourable" .)