Scarcity, lack (6)
I believe the answer is:
dearth
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">scarcity</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(dearth is a kind of scarcity)</span><br/ ><br/ >'<span class="explanation-format__original">lack</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(dearth is a kind of lack)</span><br/ ><br/ ></span>
(Other definitions for dearth that I've seen before include "Scarceness or lack" , "Acute shortage" , "Shortage, paucity" , "Insufficient amount" , "Severe shortage" .)