Practicable (6)
I believe the answer is:
viable
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">practicable</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that practicable can be written as viable)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for viable that I've seen before include "Workable" , "Possible and practical" , "Having a prospect of success" , "(Of plan) capable of working" , "Able to function, grow normally" .)