antediluvian
UK /ˌæn.tɪ.dɪˈluː.vɪ.ən/ · US /ˌæn.ti.dəˈlu.vi.ən/ adjective, noun
Forms antediluvians antedeluvian
- adjective (biblical) Belonging or pertaining to, or existing in, the time prior to the great flood described in Genesis, or (by extension) to a great or destructive flood or deluge described in other mythologies.
- adjective (by extension) Of animals and plants: long extinct; prehistoric.
- adjective Of a person or thing: very old; ancient.
- adjective Of attitudes, ideas, etc.: extremely old-fashioned, especially to a laughable extent; antiquated. “Those ideas are antediluvian.”
- noun (biblical) A person who lived in the time prior to the great flood described in Genesis, especially one of the biblical patriarchs.
- noun A very old person.
- noun A person with extremely old-fashioned attitudes, ideas, etc., especially to a laughable extent; a fogey or old fogey.
Synonyms
antediluvial prediluvian preflood prehistoric ancient aged age-old auld cobwebbed cobwebby decrepit eld eldern gamol gray hoary moss-grown old old as the hills old as the Pyramids antediluvian patriarch antiquated archaic
Antonyms
postdiluvial postdiluvian baby-faced juvenile hebetic young youngling youngly youngsome youngthly youthful youthly
Etymology
From ante- (prefix meaning ‘prior to in time’) + Latin dīluvium (“a flood”) + -an (suffix meaning ‘of or pertaining to’ forming adjectives; and forming agent nouns), referring the story of Noah’s Ark, through which God rescues Noah, his family, and examples of all the world’s animals from the great flood, which is related in Genesis 6–9 of the Bible. Dīluvium is derived from dīluō (“to wash away”) (from dis- (prefix meaning ‘apart, asunder, in two’) + lavō (“to wash”) (ultimately from Proto-Indo-European *lewh₃- (“to wash”))) + -ium (suffix forming abstract nouns). The English word is analyzable as ante- + diluvian.
Adjective sense 2 (“long extinct”) is from the fact that such animals and plants were originally believed to have perished in the biblical flood referred to above.
Webster’s 1913
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “antediluvian”, CC BY-SA 4.0. Details