Badly behaved (7)
I believe the answer is:
naughty
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">badly behaved</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for naughty that I've seen before include "Dubious" , "titillating" , "Badly behaved, child say" , "Mischievous - improper" , "mildly indecent" .)