More suitable; preferable (6)
I believe the answer is:
better
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">more suitable</span>' is the first definition.<br/ ><br/ >'<span class="explanation-format__original">preferable</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for better that I've seen before include "Comparatively good" , "Top" , "Recovered; gambler" , "Gambler; cured" , "More competent - gambler" .)