Horrible experience (6)
I believe the answer is:
ordeal
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">horrible experience</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ordeal that I've seen before include "very hard test" , "severe test shows" , "Difficult experience that tests endurance" , "Trial; nightmare" , "Horrible experience" .)