Achieve an aim (7)
I believe the answer is:
succeed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">achieve an aim</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for succeed that I've seen before include "Follow - triumph" , "what prince royal might do" , "Attain ambition" , "Come after; attain fame" , "Achieve the desired result" .)