11
vintage(adjective, antique, old-time, oldfangled, old-school)
7
old-fashioned(adjective, yesteryear)
7
retroactive
5
evocative(adjective, yesteryear)
5
ex post facto(expression, adjective, idiom)
5
antique
5
nostalgic(adjective, yesteryear)
4
dated(adjective, yesteryear)
4
old-time
3
oldfangled
3
back
3
in period style(adjective, yesteryear)
3
old-school
2
antiquated
2
archaic
2
old-world
2
quaint
1
obsolete
1
old-timey
1
out
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APASmart Define. (2016). retro thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/retro/thesaurus/synonyms
ChicagoSmart Define. 2016. "retro thesaurus" https://smartdefine.org/retro/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, retro thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/retro/thesaurus/synonyms>.
MLASmart Define. "retro thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/retro/thesaurus/synonyms>