Heathen(ish) (5)
I believe the answer is:
pagan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">heathenish</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for pagan that I've seen before include "Heathen; non-believer" , "One not accepting your god" , "Infidel" , "Unbeliever" , "advocate of pleasures" .)