haunting
verb
Definitions
To inhabit, or visit frequently (most often used in reference to ghosts).
Example: A couple of ghosts haunt the old, burnt-down house.
To make uneasy, restless.
Example: The memory of his past failures haunted him.
To stalk, to follow
Example: The policeman haunted him, following him everywhere.
To live habitually; to stay, to remain.
noun
Definitions
A particular instance of haunting; a ghostly habitation.
Example: During the haunting, strange voices and noises were heard and objects flew off tables.
adjective
Definitions
Remaining in the mind; not easily forgotten.
Example: He had a haunting gaze.