16
primordial(adjective, head, beginning, last, original)
14
betimes(adverb, time, timely, opportunely, moment)
12
first(adjective, adverb, order, start, beginning)
12
initial(adjective, start, simple, head, beginning)
12
ahead of time(expression, adjective, idiom, adverb, time)
12
premature(adjective, adverb, time, intelligent, quick)
11
untimely(adjective, time, inappropriate)
10
primeval(adjective, head, beginning, last, original)
10
primitive(adjective, start, simple, head, beginning)
10
former(noun, adjective, last, original, late)
10
original(adjective, head, beginning, opening, natural)
9
ancient(adjective, start, original, late, old)
9
beginning(noun, adjective, start, simple, head)
9
earlier(adjective, adverb, late, old, past)
9
in good time(expression, idiom, adverb, time, timely)
9
incipient(adjective, head, beginning, opening, original)
9
prematurely(adjective, adverb, time, prompt, quick)
9
punctual(adjective, characteristic, time, quality, timing)
8
old(adjective, last, original, late, past)
8
precocious(adjective, adverb, time, smart, quick)
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APASmart Define. (2016). early thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/early/thesaurus/synonyms
ChicagoSmart Define. 2016. "early thesaurus" https://smartdefine.org/early/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, early thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/early/thesaurus/synonyms>.
MLASmart Define. "early thesaurus" 29 February 2016. Web. 20 September 2026. <https://smartdefine.org/early/thesaurus/synonyms>