an·te·di·lu·vi·an [an-tee-di-loo-vee-uh
n]

–adjective
–noun
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 | very old, old-fashioned, or out of date; antiquated; primitive: antediluvian ideas. |
3. | a person who lived before the Flood. |
4. | a very old or old-fashioned person or thing. |
from dictionary.com