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English

pre-diluvian

|pre-dil-u-vi-an|

C2

/ˌpriːdɪˈluːviən/

before the Flood; extremely old/outdated

Etymology
Etymology Information

'pre-diluvian' originates from Latin via Medieval Latin, specifically the Medieval Latin 'praediluvianus', where 'prae-' meant 'before' and 'diluvi-' (from 'diluvium') meant 'flood'.

Historical Evolution

'pre-diluvian' changed from Medieval Latin 'praediluvianus' into early English forms such as 'prediluvian' or 'pre-diluvian' and eventually became the modern English adjective 'pre-diluvian'.

Meaning Changes

Initially it meant 'before the Flood' in a biblical sense; over time it acquired a figurative sense of 'extremely old or out of date' that is common in modern usage.

Meanings by Part of Speech

Noun 1

a person or thing from a time before the Flood (literal) or, figuratively, someone/something very old or out of date.

He joked that he was a pre-diluvian who couldn't understand the new app.

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Adjective 1

belonging to or existing before the biblical Flood (Noah's Flood); ancient, from a very early time.

The fossils were clearly pre-diluvian and dated to a period long before recorded history.

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Adjective 2

figurative: extremely old-fashioned, outdated, or antiquated.

His views on technology seem positively pre-diluvian compared with current practices.

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Last updated: 2025/10/02 19:05