Synonyms|702Antonyms|212|Broader|15Narrower|21Related|1.2k

48 entries under antediluvian topic. ×

18
old(adjective, hard, last, odd, sour)
14
bygone(adjective, last, original, dead, odd)
11
ancient(adjective, odd, old, primitive, previous)
9
extinct(adjective, split, quit, dead, odd)
9
olden(adjective, original, odd, old, primitive)
6
dead(adjective, hard, split, quit, odd)
6
obsolete(adjective, last, original, dead, odd)
6
passe(adjective, hard, last, original, odd)
5
antiquated(adjective, hard, last, original, odd)
5
antique(adjective, last, original, odd, old)
4
old-time(adjective, last, original, odd, old)
3
dated(adjective, last, original, odd, old)
3
old-fashioned(noun, adjective, last, original, primitive)
3
oldfangled(adjective, last, original, odd, old)
3
outmoded(adjective, last, original, odd, old)
3
primitive(adjective, last, original, odd, old)
2
archaic(adjective, last, original, odd, old)
2
of old(expression, adjective, last, original, odd)
2
out(adjective, adverb, hard, odd, old)
2
out-of-date(adjective, hard, last, original, dead)
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APASmart Define. (2015). past thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/past/thesaurus/synonyms
ChicagoSmart Define. 2015. "past thesaurus" https://smartdefine.org/past/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, past thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/past/thesaurus/synonyms>.
MLASmart Define. "past thesaurus" 25 May 2015. Web. 24 September 2026. <https://smartdefine.org/past/thesaurus/synonyms>