Proud (4)
I believe the answer is:
vain
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">proud</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 vain that I've seen before include "Pointless; narcissistic" , "Concieted or pointless" , "Useless; conceited" , "Producing no result" , "Conceited, self-important" .)