More sagacious (5)
I believe the answer is:
wiser
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">more sagacious</span>' is the definition.<br/ ><span class="explanation-format__explanation">('wise' can be similar in meaning to 'sagacious')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for wiser that I've seen before include "More shrewd" , "More judicious" , "A little more sage" , "showing more understanding?" , "improving taste?" .)