Aborted mission words (2-2)
I believe the answer is:
no-go
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">aborted mission words</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 no-go that I've seen before include "Prohibited area" , "Cancelled" , "Barricaded area" , "Can't be done, not on" , "Not possible, futile" .)