Neanderthal
Americanadjective
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of or relating to Neanderthal man.
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(often lowercase) primitive, unenlightened, or reactionary; culturally or intellectually backward.
noun
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(often lowercase)
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an unenlightened or ignorant person; barbarian.
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a reactionary; a person with very old-fashioned ideas.
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adjective
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relating to or characteristic of Neanderthal man
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primitive; uncivilized
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informal ultraconservative; reactionary
noun
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An extinct variety of human that lived throughout Europe and in parts of western Asia and northern Africa during the late Pleistocene Epoch, until about 30,000 years ago. Neanderthals had a stocky build and large skulls with thick eyebrow ridges and big teeth. They usually lived in caves, made flaked stone tools, and were the earliest humans known to bury their dead. Neanderthals were either a subspecies of modern humans (Homo sapiens neanderthalensis) or a separate, closely related species (Homo neanderthalensis). They coexisted with early modern humans (Cro-Magnons) for several thousand years before becoming extinct, but are not generally believed to have interbred with them.
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See also Mousterian
Discover More
The term Neanderthal is sometimes used to refer to a person who is thought to have primitive or unenlightened ideas: “I tried talking politics to Joe, but he's a real Neanderthal.”
Other Word Forms
- Neanderthaler noun
Etymology
Origin of Neanderthal
First recorded in 1860–65; after Neanderthal, valley in Germany, near Düsseldorf, where evidence of Neanderthal man was first found
Explanation
A neanderthal is someone who is rude and not very smart. If your brother interrupts your garden party by spraying your guests with a hose, you can call him a neanderthal. When neanderthal is spelled with a lower-case n, it means a cretin or a dolt — a rough, mean, and slightly foolish person. If you spell it with a capital N, it means an extinct species of human being, and it's the root of the lower-case version. The word Neanderthal is German, named for the Neander Valley where human fossils have been found, and around 1926 neanderthal became popular British slang for a "big, brutish, stupid person."
Vocabulary lists containing neanderthal
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Whether driven by survival needs, conflict, or both, this behavior reveals a complex and sometimes brutal side of Neanderthal life.
From Science Daily • Apr. 12, 2026
Instead the gene flow "occurred predominantly between Neanderthal males and anatomically modern human females," said Alexander Platt, a senior research scientist on the study.
From Barron's • Feb. 26, 2026
One previous piece of research on Neanderthal DNA also showed that modern humans and Neanderthals shared an oral microbe - a type of bacteria found in our saliva.
From BBC • Nov. 18, 2025
Lab-grown brain organoids with Neanderthal genetic variants reacted more strongly to lead than organoids with human genetics, hinting that Neanderthals may have been more vulnerable to lead's neurological effects.
From Science Daily • Nov. 16, 2025
About 100,000 years ago, some Sapiens groups migrated north to the Levant, which was Neanderthal territory, but failed to secure a firm footing.
From "Sapiens: A Brief History of Humankind" by Yuval Noah Harari
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.