Meaning of 'antediluvian'

adjective

so extremely old as seeming to belong to an earlier period

Example: "a ramshackle antediluvian tenement"

Synonyms: archaic

adjective

of or relating to the period before the biblical flood

Example: "antediluvian man"

Synonyms: antediluvial

noun

a very old person

Synonyms: ancient

noun

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

Synonyms: antediluvian patriarch