5
preexisting
4
pre-existing
4
preexistent
1
anterior
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foregoing
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former
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precedent
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previous
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prior
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abovementioned
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aforementioned
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aforesaid
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antecedent
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introductory
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precursory
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APASmart Define. (2013). pre-existent thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/pre-existent/thesaurus/synonyms
ChicagoSmart Define. 2013. "pre-existent thesaurus" https://smartdefine.org/pre-existent/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2013, pre-existent thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/pre-existent/thesaurus/synonyms>.
MLASmart Define. "pre-existent thesaurus" 28 June 2013. Web. 20 September 2026. <https://smartdefine.org/pre-existent/thesaurus/synonyms>