Heathen; irreligious (5)
I believe the answer is:
pagan
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">heathen</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(both can mean an irreligious person)</span><br/ ><br/ >'<span class="explanation-format__original">irreligious</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ ></span>
(Other definitions for pagan that I've seen before include "One outside the main religions" , "A heathen, not a Christian" , "Person without any conventional religion" , "advocate of pleasures" , "Heathen; non-believer" .)