Of greater age (5)
I believe the answer is:
older
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">of greater age</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 older that I've seen before include "Former" , "Of greater age (O, not E)" , "Less young" , "more history" , "More ancient" .)