Adept, proficient (7)
I believe the answer is:
skilful
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">adept</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that adept can be written as skilful)</span><br/ ><br/ >'<span class="explanation-format__original">proficient</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that proficient can be written as skilful)</span><br/ ><br/ ></span>
(Other definitions for skilful that I've seen before include "Adroit" , "Adept, expert" , "Capable" , "exhibiting crafts" , "Very adept and proficient" .)