16
first(adjective, adverb, start, simple, top)
13
initial(adjective, start, top, beginning, original)
10
maiden(adjective, start, original)
10
original(adjective, start, clean, harsh, perfect)
10
primary(adjective, start, simple, top, original)
8
primitive(adjective, simple, top, original, basic)
8
beginning(adjective, opening, original, best, authentic)
8
primeval(adjective, harsh, wild, original, crude)
8
primordial(adjective, start, simple, original, basic)
6
primal(adjective, primary, primeval)
6
prime(adjective, start, top, original, best)
6
pristine(adjective, simple, clean, pure, original)
5
aboriginal(adjective, original, authentic, primitive, existing)
5
earlier
5
early(adjective, simple, clean, perfect, natural)
5
foremost(adjective, adverb, top, beginning, opening)
5
incipient(beginning, opening, original, first, primary)
4
anterior
4
basic(adjective, simple, top, beginning, opening)
4
pioneer(adjective, start, beginning, opening, original)
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APASmart Define. (2016). earliest thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/earliest/thesaurus/synonyms
ChicagoSmart Define. 2016. "earliest thesaurus" https://smartdefine.org/earliest/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, earliest thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/earliest/thesaurus/synonyms>.
MLASmart Define. "earliest thesaurus" 13 March 2016. Web. 22 September 2026. <https://smartdefine.org/earliest/thesaurus/synonyms>