From Longman Dictionary of Contemporary Englishantediluvianan‧te‧di‧lu‧vi‧an /ˌæntɪdəˈluːviən◂/ adjective formal OLD-FASHIONEDvery old-fashioned SYN outdated antediluvian ideas about women
Examples from the Corpus
antediluvian• Most guys he met thought this was too far out, positively antediluvian.• Regrettably, this illogical and antediluvian attitude still persists even when we are dealing with nations substantially richer than ourselves.• antediluvian attitudes toward the disabledOrigin antediluvian (1600-1700) ante- + Latin diluvium “flood” 