antediluvian
Word family adjectiveantediluvialantediluvianadverbantediluvially
an·te·di·lu·vi·an /ˌæntɪdəˈluːviən◂/ adjectiveadj formal 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 disabled Origin antediluvian (1600-1700) ante- + Latin diluvium “flood”