Long-lasting (8)
I believe the answer is:
enduring
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">long-lasting</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for enduring that I've seen before include "having lasting qualities" , "Lasting, unceasing" , "showing toleration" , "Bearing patiently or lasting" , "Going through" .)