WordNet (r) 3.0 (2006):

hang out
    v 1: spend time in a certain location or with certain people;
         "She hangs out at the corner cafe"

Moby Thesaurus II by Grady Ward, 1.0:

66 Moby Thesaurus words for "hang out":
   abide, affect, aller sans dire, be conspicuous, be exposed,
   be found, be manifest, be no secret, beetle, berth, betray itself,
   bide, bunk, cohabit, come across, come along, come out,
   come to hand, come to light, crop out, dig, discover itself,
   domicile, domiciliate, doss down, dwell, frequent, glare,
   go without saying, hang around, hang out at, hang over, haunt,
   have high visibility, impend, impend over, inhabit, jut, live,
   lodge, materialize, need no explanation, nest, occupy, overhang,
   perch, project, project over, remain, reside, resort, resort to,
   room, roost, sauter aux yeux, shout, show up, speak for itself,
   squat, stand out, stay, stick out, strike the eye, tenant,
   thrust over, turn up