44
passé(adjective, feature, characteristic, dull, hard)
43
obsolete(adjective, feature, characteristic, trait, common)
43
old-fashioned(adjective, feature, characteristic, dull, trait)
42
antiquated(adjective, feature, characteristic, dull, hard)
41
dated(adjective, feature, characteristic, dull, trait)
41
outdated(adjective, feature, characteristic, dull, trait)
40
superannuated(adjective, feature, characteristic, trait, original)
39
outmoded(adjective, feature, characteristic, dull, trait)
38
antique(adjective, feature, characteristic, dull, trait)
38
archaic(adjective, feature, characteristic, dull, flat)
38
old(adjective, feature, characteristic, dull, hard)
35
demode(adjective, feature, characteristic, trait, last)
34
extinct(adjective, feature, characteristic, trait, dead)
8
vintage(adjective, new, odd, old, primitive)
6
bygone(adjective, new, last, original, dead)
5
dowdy(adjective, dull, new, vulgar, odd)
5
outworn(odd, old, primitive, unfashionable, outdated)
4
fusty(adjective, dull, hard, new, tired)
4
old-time(adjective, dull, new, last, original)
4
old hat
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APASmart Define. (2015). out-of-date thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/out-of-date/thesaurus/synonyms
ChicagoSmart Define. 2015. "out-of-date thesaurus" https://smartdefine.org/out-of-date/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, out-of-date thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/out-of-date/thesaurus/synonyms>.
MLASmart Define. "out-of-date thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/out-of-date/thesaurus/synonyms>