Annoying kid (4)
I believe the answer is:
brat
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">annoying kid</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for brat that I've seen before include "Brash young type" , "An obnoxious or spoiled child" , "Young rascal" , "Horrible child" , "Ill-mannered child" .)