Put to death (7)
I believe the answer is:
execute
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">put to death</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for execute that I've seen before include "run a program" , "Kill someone" , "Carry out; behead" , "Carry output to death" , "Carry out or kill legally" .)