9
past(adjective, past)
8
historic
8
real
8
factual(adjective, being in fact)
6
chronological(adjective, record, history, chronology, timeline)
5
actual(adjective, being in fact)
5
authentic
5
documented(adjective, tabulated)
5
existent(adjective, being in fact)
5
narrative(adjective, chronological, storylike)
4
ancient(adjective, past)
4
documentary(adjective, being in fact)
4
old(adjective, past)
4
recorded(adjective, tabulated)
3
archival
3
diachronic
3
former(adjective, past)
3
true
3
verifiable
3
chronologic
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APASmart Define. (2016). historical thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/historical/thesaurus/synonyms
ChicagoSmart Define. 2016. "historical thesaurus" https://smartdefine.org/historical/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, historical thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/historical/thesaurus/synonyms>.
MLASmart Define. "historical thesaurus" 31 March 2016. Web. 21 September 2026. <https://smartdefine.org/historical/thesaurus/synonyms>