Overstep (10)
I believe the answer is:
transgress
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">overstep</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for transgress that I've seen before include "Commit a sin" , "Break (limit, law)" , "Cause offence" , "Go beyond (legal) limits" , "commit offence" .)