Very ugly; grotesque (7)
I believe the answer is:
hideous
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">very ugly</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">grotesque</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for hideous that I've seen before include "Extremely unpleasant" , "Frightful" , "Horrible" , "revolting" , "Ghastly" .)