[{"Bold_text": "adjective", "List Items": ["of or relating to Neanderthal man Neanderthal man.", "(often lowercase)Informal.primitive, unenlightened, or reactionary; culturally or intellectually backward."]}, {"Bold_text": "noun", "List Items": ["Neanderthal man Neanderthal man.", "(often lowercase)Informal.an unenlightened or ignorant person; barbarian.a reactionary; a person with very old-fashioned ideas.", "an unenlightened or ignorant person; barbarian.", "a reactionary; a person with very old-fashioned ideas."]}]