Older companion? (5)
I believe the answer is:
wiser
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">older companion?</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for wiser that I've seen before include "Less foolish" , "Having learned one's lesson?" , "More judicious" , "A little more sage" , "More sensible" .)