adjective. Occurring or belonging to the era before the Flood.

adjective. Extremely old or old-fashioned. synonym: old.

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.

noun. One who lived before the deluge.

noun. Hence, humorously

noun. One who is very old or very antiquated in manners or notions; an old fogy.

adjective. Of or relating to the period before the Deluge in Noah's time; hence, antiquated.

adjective. ancient or antiquated; old; prehistoric.

adjective. Supremely dated.

adjective. Pertaining or belonging to the time period prior to a great or destructive flood or deluge

adjective. Pertaining or belonging to the time prior to Noah's Flood.

noun. One who lived prior to Noah's Flood.

noun. a very old person

adjective. so extremely old as seeming to belong to an earlier period

noun. any of the early patriarchs who lived prior to the Noachian deluge

adjective. of or relating to the period before the biblical flood

"The doctor armed himself, and held himself in readiness to fire upon an animal which, by its dimensions, recalled the antediluvian quadrupeds."