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: regarded as being outdated or outmoded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.
Imagine two prehistoric humans hearing rustling in the bushes. Alejandro Cárdenas Villa, Forbes.com, 27 July 2026 Seven bidders battled for Gus for 10 minutes, as new wealth vied for a piece of prehistoric history. Robert Frank, CNBC, 24 July 2026 Then, after Erica has a peevish moment with Scotty, the gang hears about the landing party’s prehistoric adventures over drinks. Keith Phipps, Vulture, 23 July 2026 While the area was formerly covered by prehistoric lakes, today the water here mainly exists as seasonal wetlands, gurgling geysers, hot springs, and a hypersaline lake that’s saltier than the ocean. Zoe Baillargeon, Travel + Leisure, 18 July 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 6 Aug. 2026.

Kids Definition

prehistoric

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

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