Frowns (6)
I believe the answer is:
scowls
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">frowns</span>' is the definition.<br/ ><span class="explanation-format__explanation">(scowling is a kind of frowning)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for scowls that I've seen before include "Frowns with displeasure" , "Gives black looks" , "Angry frowns" , "Furrows forehead in bad humour" , "Bad-tempered frowns" .)