Transgressed (6)
I believe the answer is:
sinned
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">transgressed</span>' is the definition.<br/ ><span class="explanation-format__explanation">(sinning is a kind of transgressing)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sinned that I've seen before include "Transgressed the moral law" , "Violated a moral law" , "Committed a serious offence" , "trespassed" , "Send in (anag.)" .)