haunting

verb

1. (form-of, gerund, participle, present)present participle and gerund of haunt

   “A ghost was haunting the house.”

adj

1. Remaining in the mind; not easily forgotten.

   “He had a haunting gaze.”

noun

1. A particular instance of haunting; a ghostly habitation.

   “During the haunting, strange voices and noises were heard and objects flew off tables.”

   “They [most ghosts] prefer taking trips back to Earth. ... They go and try to assert their ownership of some house that once belonged to them: and then ye get what's called a Haunting.”