an⋅te⋅di⋅lu⋅vi⋅an
   /ˌæntidɪ'luviən/ Show Spelled Pronunciation [an-tee-di-loo-vee-uhn] Show IPA
-adjective
1.  of or belonging to the period before the Flood. Gen. 7, 8.
2.  very old, old-fashioned, or out of date; antiquated; primitive: antediluvian ideas.
-noun
3.  a person who lived before the Flood.
4.  a very old or old-fashioned person or thing.