1. (adj.)Neanderthal (often l.c.) primitive, unenlightened, or reactionary.
2. (n.)Neanderthal (often l.c.)
3. Neanderthal an unenlightened, old-fashioned, or reactionaryperson.
Etymology: (1860–65; after Neanderthal, valley in Germany where evidence of Neanderthal man was first found)
Definition of 'neanderthal'
Princeton's WordNet
1. (adj)Neandertal man, Neanderthal man, Neandertal, Neanderthal, Homo sapiens neanderthalensis extinct robust human of MiddlePaleolithic in Europe and westernAsia
2. (adj)boorish, loutish, neanderthal, neandertal, oafish, swinish ill-mannered and coarse and contemptible in behavior or appearance "was boorish and insensitive"; "the loutish manners of a bully"; "her stupid oafish husband"; "aristocratic contempt for the swinish multitude"
3. (adj)Neanderthal, Neanderthalian, Neandertal relating to or belonging to or resembling Neanderthal man "Neanderthal skull"