Existing before the flood (the Noachian deluge) recorded in Genesis; relating to the times or events before the Noachian deluge: as, the antediluvian patriarchs: by extension, applied to the time preceding any great flood or inundation, as that which is said to have occurred in China in the time of Yao, 2298 b. c.
Belonging to very ancient times; antiquated; primitive; rude; simple: as, antediluvian ideas. The whole system of travelling accommodations was barbarous and antediluvian.De Quincey, Works, II. 163.
One who lived before the deluge. The longevity of the antediluvians.Bentley.
I trusted you, I had faith in you, and I don't know why!
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The Sheikh's Innocent Bride
Volumnia, in her room up a retired landing on the stair-case -- the second turning past the end of the carving and gilding, a cousinly room containing a fearful abortion of a portrait of Sir Leicester banished for its crimes, and commanding in the day a solemn yard planted with dried-up shrubs like antediluvian specimens of black tea -- is a prey to horrors of many kinds.
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Bleak House
The Star is invariably late, if he or she bothers to turn up at all, and the Hobbesian serfs will keep up the pretense of tinkering until minutes before the doors are supposed to open, leaving you little time to ascertain that your antediluvian technology is at least working.
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Broken Music, A Memoir
My guests now had a choice of believing me an extraterrestrial or wondering if sometime in Earth's antediluvian past, various now-forgotten species had roamed this world and I was a stale leftover.
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Analog Science Fiction and Fact
Hired in the darkness, I'd guess.
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Scion of Cyador