Persist longer than (7)
I believe the answer is:
outlast
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">persist longer than</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for outlast that I've seen before include "Survive beyond" , "carry on after all others" , "Live longer than" , "Go on longer than" , "Persist longer than" .)