Doom (4)
I believe the answer is:
fate
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">doom</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that doom can be written as fate)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for fate that I've seen before include "Predetermined end" , "Predestiny" , "E.g. Clotho, Atropos" , "Fortune" , "What must be" .)