Eerie, spine-tingling (6)
I believe the answer is:
spooky
(Other definitions for spooky that I've seen before include "Sinister, ghostly" , "Chilling" , "weird" , "Eerie" , "Rather frightening" .)
I believe the answer is:
spooky
(Other definitions for spooky that I've seen before include "Sinister, ghostly" , "Chilling" , "weird" , "Eerie" , "Rather frightening" .)