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Antediluvian
01
a very old person
02
any of the early patriarchs who lived prior to the Noachian deluge
antediluvian
01
of or relating to the period before the biblical flood
02
extremely old, primitive, or outdated
Informal
Example
His antediluvian beliefs about gender roles seemed completely out of place in today 's world.
The teacher ’s antediluvian methods of instruction failed to engage the tech-savvy students.
The company finally decided to upgrade its antediluvian policies to better fit the modern workplace.
Example
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