Futile; conceited (4)
I believe the answer is:
vain
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">futile</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that futile can be written as vain)</span><br/ ><br/ >'<span class="explanation-format__original">conceited</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that conceited can be written as vain)</span><br/ ><br/ ></span>
(Other definitions for vain that I've seen before include "thoughtless" , "Conceited, arrogant" , "Conceited, self-important" , "Concieted or pointless" , "Conceited and ineffectual" .)