4
first(adjective, lower, opening, basic, old)
4
foremost(adjective, first, forward)
4
inaugural
4
leading(adjective, past, first, forward, previous)
4
older(adjective, senior, oldest)
4
once(adjective, adverb, late, old, past)
4
preexistent(adjective, earlier)
4
prelusive(precedence, precursor)
4
previously(adjective, adverb, first, forward, priority)
4
then
3
above(adjective, preposition)
3
aforesaid(adjective, precedence, priority)
3
anticipatory
3
latest
3
mendicant
3
onetime
3
pre-existing(adjective, priority)
3
prevenient
3
previous to(verb, phrasal verb)
3
primary
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APASmart Define. (2015). prior thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/prior/thesaurus/synonyms
ChicagoSmart Define. 2015. "prior thesaurus" https://smartdefine.org/prior/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, prior thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/prior/thesaurus/synonyms>.
MLASmart Define. "prior thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/prior/thesaurus/synonyms>