Foul mood (4)
I believe the answer is:
snit
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">foul mood</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 snit that I've seen before include "Sulking" , "American sulks" , "fit of temper" , "State of agitated irritation" .)