Churl (4)
I believe the answer is:
boor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">churl</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for boor that I've seen before include "Barbarian" , "Coarse, ill-mannered person" , "oaf" , "Crude uncouth person" , "Rude, uncultivated person" .)