Synonyms|224Antonyms|31|Broader|1Narrower|0Related|187
0
formerly
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from prehistoric times(expression, idiom, the past)
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gentility
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gray
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heretofore
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high(adjective, new)
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hitherto
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immemorial usage(expression, idiom, oldness)
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indefinitely ancient(expression, idiom)
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last(previous, other)
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longstanding
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mode
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ntiquity
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observance
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older
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one-time(last, previous, other)
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orthodox
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other(last, previous)
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practice
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prescriptively
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APASmart Define. (2016). immemorial thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/immemorial/thesaurus/synonyms
ChicagoSmart Define. 2016. "immemorial thesaurus" https://smartdefine.org/immemorial/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, immemorial thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/immemorial/thesaurus/synonyms>.
MLASmart Define. "immemorial thesaurus" 29 February 2016. Web. 26 September 2026. <https://smartdefine.org/immemorial/thesaurus/synonyms>