Mystical, supernatural (6)
I believe the answer is:
occult
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">mystical</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that mystical can be written as occult)</span><br/ ><br/ >'<span class="explanation-format__original">supernatural</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that supernatural can be written as occult)</span><br/ ><br/ ></span>
(Other definitions for occult that I've seen before include "Magical; secret" , "Involving supernatural phenomena" , "Involving magical powers" , "Esoteric, magical" , "Supernatural forces and events and beings" .)