0
genuine(authentic, first, previous, initial)
0
in front
0
inchoate(beginning, opening, original, first, primary)
0
inductive
0
initiative(beginning, opening, original, first, primary)
0
major
0
matutinal
0
most aged(expression, adjective, eldest)
0
most early(expression, idiom)
0
nascent(beginning, opening, original, first, primary)
0
olden
0
pilot
0
preceding
0
precursory
0
prefatory
0
preliminary(opening, original, first, early, initial)
0
preparatory
0
preparing
0
previous(first, initial)
0
primogenital(adjective, eldest)
10 years ago|5k views|share |citing 
APASmart Define. (2016). earliest thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/earliest/thesaurus/synonyms
ChicagoSmart Define. 2016. "earliest thesaurus" https://smartdefine.org/earliest/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, earliest thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/earliest/thesaurus/synonyms>.
MLASmart Define. "earliest thesaurus" 13 March 2016. Web. 23 September 2026. <https://smartdefine.org/earliest/thesaurus/synonyms>