Definitions of antediluvian:
- noun: a very old (or old fashioned) person
- noun: any of the early patriarchs who lived prior to the Deluge
- adjective: so extremely old as seeming to belong to an earlier period
Example: "A ramshackle antediluvian tenement"
- adjective: of or relating to the period before the Biblical flood
Example: "Antediluvian man"
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