Bad-tempered person (5)
I believe the answer is:
grump
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bad-tempered person</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 grump that I've seen before include "grouse" , "surly type" , "Beef" , "pet?" , "Sulky person" .)