1
ages ago(expression, adjective, late, old, past)
1
ancient history(expression, adjective, late, old, past)
1
antiquated(adjective, last, dead, past, lost)
1
archaic(adjective, last, dead, past, lost)
1
back when(expression, adjective, late, old, past)
1
behind one(expression, adjective, late, old, past)
1
belated(adjective, dead, past, lost, previous)
1
bypast(adjective, late, old, past, previous)
1
dated(adjective, last, dead, past, lost)
1
dead(adjective, past, lost, previous, former)
1
defunct(adjective, dead, past, lost, previous)
1
departed(adjective, dead, old, past, lost)
1
early(adjective, last, late, old, past)
1
extinct(adjective, dead, past, lost, previous)
1
foregoing(adjective, late, old, past, previous)
1
forgotten(adjective, dead, past, lost, previous)
1
gone(adjective, dead, past, lost, previous)
1
gone-by(adjective, late, old, past, previous)
1
gone by(expression, adjective, dead, late, old)
1
good old days(expression, idiom, late, old, past)
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APASmart Define. (2015). one-time thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/one-time/thesaurus/synonyms
ChicagoSmart Define. 2015. "one-time thesaurus" https://smartdefine.org/one-time/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, one-time thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/one-time/thesaurus/synonyms>.
MLASmart Define. "one-time thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/one-time/thesaurus/synonyms>