Break the rules (5)
I believe the answer is:
cheat
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">break the rules</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 cheat that I've seen before include "Fool" , "offending pupil" , "Dishonest dealer" , "Deceitful person" , "Play dishonestly" .)