Hardy, durable (5)
I believe the answer is:
tough
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">hardy</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">durable</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for tough that I've seen before include "Strong - difficult" , "Difficult to cut and chew" , "Strict, uncompromising" , "Unlucky" , "Strong - ruffian" .)