Vulgar, unrefined (6)
I believe the answer is:
coarse
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">vulgar</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that vulgar can be written as coarse)</span><br/ ><br/ >'<span class="explanation-format__original">unrefined</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ ></span>
(Other definitions for coarse that I've seen before include "Unpolished -- ribald" , "Rough in texture or crude in manner" , "lacking in taste" , "Rought or crude" , "Vulgar - unrefined" .)