More proficient (5)
I believe the answer is:
abler
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">more proficient</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for abler that I've seen before include "More skilled" , "More competent, perhaps like seaman" , "More proficient" , "More gifted or competent - maybe a seaman?" , "Showing more skill" .)