Unavailing (7)
I believe the answer is:
useless
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unavailing</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for useless that I've seen before include "Of no practical application, not worth keeping" , "nohoper?" , "Is Sue less impractical?" , "Ineffectual" , "Not worth a jot" .)