Antediluvian

Definitions

1. A person who lived in the time prior to the great flood described in Genesis, especially one of the biblical patriarchs.
2. A very old person.
   excessive, figuratively, humorous
3. A person with extremely old-fashioned attitudes, ideas, etc., especially to a laughable extent; a fogey or old fogey.
   excessive, figuratively, humorous

Equivalents

Examples

“From what cursed old antediluvian, who lived before the invention of the spinning-jennies, she learned this craft, Heaven only knows; […]”

“He was a boy in form⟳, and an antediluvian in feature. Some thought […] that he was really and truly a Brownie.”

CEFR level