Definition of prehistoric
- prehistoric attitudes
His attitudes about women are downright prehistoric.
prehistoric notions about mental illness that have no place in today's world
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'prehistoric.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: of, relating to, or existing in the time before people could write
: very old or outdated
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