Carry out, commit (10)
I believe the answer is:
perpetrate
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">carry out</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">commit</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for perpetrate that I've seen before include "Commit (crime)" , "Be responsible for" , "Act" , "perform" , "Carry out, commit" .)