caveman

from WordNet (r) 3.0 (2006)

caveman
    n 1: someone who lives in a cave [syn: {caveman}, {cave man},
         {cave dweller}, {troglodyte}]

from Moby Thesaurus II by Grady Ward, 1.0

29 Moby Thesaurus words for "caveman":
      Bronze Age man, Hominidae, Iron Age man, Stone Age man, aboriginal,
      aborigine, ancient, antediluvian, anthropoid, ape-man, autochthon,
      bucko, bushman, cave dweller, fossil man, he-man, hominid,
      humanoid, jock, jockstrap, man of old, missing link, preadamite,
      prehistoric man, prehuman, primate, primitive, protohuman,
      troglodyte