freeloader

freeloader
    n 1: someone who takes advantage of the generosity of others
    

43 Moby Thesaurus words for "freeloader":
      barnacle, beat, beggar, bloodsucker, bummer, cadger, caller,
      company, coupon clippers, deadbeat, deadhead, drone, free rider,
      frequenter, gate-crasher, guest, habitue, hanger-on, idle rich,
      leech, leisure class, lounge lizard, lumpen proletariat, mendicant,
      moocher, nonworker, panhandler, paper, paper house, parasite,
      pass holder, rentiers, smell-feast, spiv, sponge, sponger, sucker,
      the unemployable, the unemployed, uninvited guest, visitant,
      visitor, well