Soonest (8)
I believe the answer is:
earliest
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">soonest</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that soonest can be written as earliest)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for earliest that I've seen before include "Arriving first" , "Original or most previous" , "Very first in a sterile manner" , "Nearest the beginning in time" , "Ateliers (anag.)" .)