Synonyms|175Antonyms|6|Broader|2Narrower|0Related|53
10
antiquated
10
obsolete
9
old-fashioned
8
archaic(adjective, old)
7
dated
7
old hat
6
old
6
outmoded
5
ancient
5
antique
5
extinct(adjective, dead, lost, former)
5
obsolescent(adjective, outworn)
4
antediluvian
3
behind the times(expression, adjective, idiom, current)
3
disused
3
out of fashion(expression, adjective, idiom, senescent)
3
superseded
2
abandoned(adjective, rejected, damaged)
2
behind time
2
behindhand
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APASmart Define. (2015). out of date thesaurus. Retrieved September 20, 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 "out of date thesaurus" https://smartdefine.org/out_of_date/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, out of date thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/out_of_date/thesaurus/synonyms>.
MLASmart Define. "out of date thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/out_of_date/thesaurus/synonyms>