55 entries under adjective topic. ×

3
oldest(aged, eldest)
3
premier
3
savage(wild, untamed)
2
ancient
2
inaugural(beginning, opening, original, best)
2
initiatory(beginning, opening, original, first)
2
leadoff
2
old
2
starting(authentic, first, previous, initial)
1
Noachian
1
Noachic
1
antiquated
1
antique
1
archaic
1
authentic(first, previous, initial)
1
best
1
chief
1
elementary(simple, top, beginning, opening)
1
fundamental(simple, top, beginning, opening)
1
inceptive(beginning, opening, original, authentic)
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APASmart Define. (2016). earliest thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/earliest/thesaurus/synonyms
ChicagoSmart Define. 2016. "earliest thesaurus" https://smartdefine.org/earliest/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, earliest thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/earliest/thesaurus/synonyms>.
MLASmart Define. "earliest thesaurus" 13 March 2016. Web. 24 September 2026. <https://smartdefine.org/earliest/thesaurus/synonyms>