From Longman Dictionary of Contemporary Englishneanderthalne‧an‧der‧thal /niˈændəˌtɑːl $ -dərˌθɒːl, -ˌtɑːl/ noun [countable] 1 (also Neanderthal)SA an early type of human being2 STUPID/NOT INTELLIGENTa man who is big, ugly, and stupid3 CHANGE YOUR MINDsomeone who has old-fashioned ideas and opposes change —neanderthal adjective his neanderthal attitude towards womenOrigin neanderthal (1800-1900) Neanderthal, valley of the Neander river in Germany, where bones of Neanderthal man were found in 1856