Tasteless, vulgar (5)
I believe the answer is:
crude
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">tasteless</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">vulgar</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for crude that I've seen before include "In a natural state - vulgar" , "Unrefined; makeshift" , "Oil; rough" , "Petroleum" , "Uncouth" .)