Slovenly, foul (7)
I believe the answer is:
squalid
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">slovenly</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">foul</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(both can mean disgusting)</span><br/ ><br/ ></span>
(Other definitions for squalid that I've seen before include "Seamy, sleazy" , "Run-down - filthy" , "Foul" , "Dirty and repulsive" , "Slum-like" .)