Severe, stark (5)
I believe the answer is:
harsh
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">severe</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">stark</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for harsh that I've seen before include "'Severe, rough (5)'" , "Abrasive, rough or unkind" , "Unkind or cruel" , "Unpleasantly stern" , "Severe; bleak" .)