One of the five stages of grief (5)
I believe the answer is:
anger
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">one of the five stages of grief</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for anger that I've seen before include "Strongly annoy" , "Spleen" , "Strong displeasure" , "There's fury" , "Extreme annoyance" .)