Immoral act (3)
I believe the answer is:
sin
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">immoral act</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 sin that I've seen before include "It breaches the moral law" , "Breach of moral code" , "Immorality" , "Behave badly" , "Serious offence" .)