apparition

demon

demonic

exorcism

exorcist

fright

frightening

ghost

ghost hunter

ghostlike

ghostly

ghoul

halloween

harry potter

haunt

haunt house

hell

horror

insane

insanity

live dead

nightmare

paranormal

phantom

poltergeist

possess

ritual

ritualistic

satan

satanic

scary

seance

specter

spirit

spooky

supernatural

terrifying

terror

undead

unreal

unworldly

whisper

zombie