Shoot for the moon (6)
I believe the answer is:
aspire
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">shoot for the moon</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for aspire that I've seen before include "Have ambition or desire for praise" , "Strive for higher things" , "I spare (anag.)" , "Persia (anag.)" , "Have aspiration for, aim at" .)