early 14c., "accustomed;" mid-14c., "stirred, aroused;" early 15c., "frequent;" 1570s, "much-frequented;" past-participle adjective from haunt (v.). Meaning "visited by ghosts" is from 1711; haunted house attested by 1733.
became more and more haunted by the stupid riddle
her expression became progressively more haunted
a haunted house