antediluvian

adj. before the Flood (Biblical); antiquated, ancient

The word antediluvian (syn.Prediluvian) (latin for "before the flood") is used to describe a period of time that preceded the Great Flood of Noah as related in the Book of Genesis in the Bible.
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Noun
1. any of the early patriarchs who lived prior to the Deluge
(synonym) antediluvian patriarch
(hypernym) patriarch
2. a very old (or old fashioned) person
(hypernym) oldster, old person, senior citizen, golden ager
Adjective
1. of or relating to the period before the Biblical flood; "Antediluvian man"
(synonym) antediluvial
(pertainym) diluvian, diluvial
2. so extremely old as seeming to belong to an earlier period; "a ramshackle antediluvian tenement"; "antediluvian ideas"; "archaic laws"
(synonym) antiquated, archaic
(similar) old

(n.)
One who lived before the Deluge.
  

(a.)
Of or relating to the period before the Deluge in Noah's time; hence, antiquated; as, an antediluvian vehicle.
  

antediluvian