ANTEDILUVIAN
antediluvian, antiquated, archaic
(adjective) so extremely old as seeming to belong to an earlier period; “a ramshackle antediluvian tenement”; “antediluvian ideas”; “archaic laws”
antediluvian, antediluvial
(adjective) of or relating to the period before the biblical flood; “antediluvian man”
ancient, antediluvian
(noun) a very old person
antediluvian, antediluvian patriarch
(noun) any of the early patriarchs who lived prior to the Noachian deluge
Source: WordNet® 3.1
Etymology
Adjective
antediluvian (comparative more antediluvian, superlative most antediluvian)
Ancient or antiquated.
Synonyms: antediluvial, old, prehistoric, Thesaurus:old
Extremely dated.
Synonyms: dated, old-fashioned, Thesaurus:obsolete
Pertaining or belonging to the time period prior to a great or destructive flood or deluge.
Synonym: preflood
(biblical) Pertaining or belonging to the time prior to Noah's Flood.
Synonym: antediluvial
Coordinate term: prelapsarian
Noun
antediluvian (plural antediluvians)
One who lived prior to Noah's Flood.
Source: Wiktionary
An`te*di*lu"vi*an, a.
Definition: Of or relating to the period before the Deluge in Noah's time;
hence, antiquated; as, an antediluvian vehicle.
– n.
Definition: One who lived before the Deluge.
Source: Webster’s Unabridged Dictionary 1913 Edition