prehistoric

adjective

variants or less commonly prehistorical
Synonyms of prehistoric
1
: of, relating to, or existing in times antedating written history
2
: of or relating to a language in a period of its development from which contemporary records of its sounds and forms have not been preserved
3
: regarded as being outdated or outmoded
prehistoric attitudes

Examples of prehistoric in a Sentence

His attitudes about women are downright prehistoric. prehistoric notions about mental illness that have no place in today's world
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
But tyrannosaurs have not thrived among these wet woodlands of prehistoric Utah just by bringing each other gifts. — Literary Hub, 27 Oct. 2026 Other witnesses reported smaller, hairy creatures, a prehistoric-looking bird and a worm allegedly measuring 8 feet long. — Greg Wehner, FOXNews.com, 25 Oct. 2026 But moving beyond prehistoric time to the last century, comparison still had constraints. — Ashwini Nadkarni, Time, 24 Oct. 2026 That absence presented a problem for scientists trying to understand how the animals spread around the prehistoric world. — Daniel Cassady, ARTnews.com, 15 Oct. 2026 See All Example Sentences for prehistoric

Word History

First Known Use

1832, in the meaning defined at sense 1

Time Traveler
The first known use of prehistoric was in 1832

Cite this Entry

“Prehistoric.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prehistoric. Accessed 1 Nov. 2026.

Kids Definition

prehistoric

adjective
: of, relating to, or existing in times before written history
prehistoric animals
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