1
once(last, original, past, primitive, venerable)
1
onetime(last, original, past, primitive, venerable)
1
out of fashion(expression, adjective, idiom)
1
out of style(expression, idiom, unfashionable, antiquated, archaic)
1
outworn(dead, out, old, unfashionable, antiquated)
1
over
1
passé(adjective, prehistoric)
1
passed away(verb, phrasal verb, the past)
1
petrified
1
pop
1
pops
1
preclassical
1
precultural
1
prehistoric man
1
prehuman
1
prelapsarian
1
premillenarian
1
premundane
1
prerevolutionary
1
preromantic
11 years ago|11k views|share |citing 
APASmart Define. (2015). antediluvian thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/antediluvian/thesaurus/synonyms
ChicagoSmart Define. 2015. "antediluvian thesaurus" https://smartdefine.org/antediluvian/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, antediluvian thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/antediluvian/thesaurus/synonyms>.
MLASmart Define. "antediluvian thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/antediluvian/thesaurus/synonyms>