Creepy (5)
I believe the answer is:
eerie
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">creepy</span>' is the definition.<br/ ><span class="explanation-format__explanation">(eerie can mean strange or creepy)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for eerie that I've seen before include "Bloodcurdling" , "Ghostly" , "Spooky, creepy" , "Strange and disturbing" , "Frighteningly odd" .)