Muslim (7)
I believe the answer is:
islamic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">muslim</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that muslim can be written as Islamic)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for islamic that I've seen before include "Of Mohammed's religion" , "Relating to Muhammad's religion" , "Relating to Muslim religion" , "Of the Arabic religion" , "Relating to a particular religion" .)