adjective. Continually recurring to the mind; unforgettable.

noun. The appearance or visitation of disembodied spirits.

verb. Present participle of haunt.

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

adjective. continually recurring to the mind

adjective. having a deeply disquieting or disturbing effect

"In the interest of avoiding such untenable consequences, the notion that a haunting is a condition which can and should be ascertained upon reasonable inspection of the premises is a hobgoblin which should be exorcised from the body of legal precedent and laid quietly to rest ..."

moving  unforgettable  

daunting  flaunting  taunting  

continuous  cyclical  ever-recurring  frequent  incessant  

haunt