6
preexisting
4
antecedent
4
early
4
pre-existent
4
pre-existing
4
preceding(quick, previous, higher, upper, immediate)
3
prior(adjective, earlier)
2
foregoing(previous, higher, upper, earlier, preceding)
2
former(previous, higher, upper, earlier, preceding)
2
senior(higher, upper, abovementioned)
1
above(head, previous, higher, upper, earlier)
1
above-mentioned(head, previous, higher, upper, earlier)
1
above-named(head, previous, higher, upper, earlier)
1
aforeknown(head, previous, higher, upper, earlier)
1
aforementioned(head, previous, higher, upper, earlier)
1
aforesaid
1
ahead of
1
anterior
1
anticipatory
1
before
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APASmart Define. (2015). preexistent thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/preexistent/thesaurus/synonyms
ChicagoSmart Define. 2015. "preexistent thesaurus" https://smartdefine.org/preexistent/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, preexistent thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/preexistent/thesaurus/synonyms>.
MLASmart Define. "preexistent thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/preexistent/thesaurus/synonyms>