Synonyms for haunt

noun

1. A retreat

   den, resort, headquarters, lair, meeting place, rendezvous, trysting place; see also bar 2, refuge 1, retreat 2.

2. A spirit

   poltergeist, spook, phantom; see ghost 1, 2.

verb

1. To frequent persistently

   habituate, visit often, resort to; see frequent.

2. To frequent as a spirit

   come as a ghost, appear as a phantom, permeate, pervade, rise, float, before the eyes, dwell in, walk, be disclosed, inhabit, hover about, return from the dead, manifest itself, materialize, reappear frequently to after death, visit habitually after death, spook*, ha'nt*.

3. To prey upon

   recur in one's mind, obsess, torment, beset, possess, trouble, weigh on one's mind, touch one's conscience, craze, madden, hound, terrify, bedevil, plague, dwell heavily upon, intrude upon continually, vex, harass, weigh on, prey on, infest, pester, be ever present, besiege, worry, tease, terrorize, disquiet, recur to persistently, frighten, annoy, possess one's mind, cause regret, cause sorrow, molest, harrow, appall, agitate, rack, overrun, sting, nettle, hang over one's head, agonize, unman, drive one nuts*; see also bother 2, disturb 2.