Definition of Neanderthalian in English:

Neanderthalian

Pronunciation /nɪˌandəˈtɑːlɪən/

adjective

  • Neanderthal.

noun

  • Neanderthal.

Origin

1920s; earliest use found in H. G. Wells (1866–1946), novelist and social commentator. From Neanderthal + -ian, perhaps after French néanderthalien, néandertalien, adjective.