Synonyms|106Antonyms|61|Broader|4Narrower|0Related|137
0
beginning
0
black-letter
0
demoded
0
diluvian
0
elemental
0
ere now(expression, idiom, the past)
0
ex post facto(expression, idiom, the past)
0
first
0
fossilized
0
from time immemorial(expression, idiom, the past)
0
heretofore
0
hitherto
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hoary(adjective, early, antique, primordial)
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neolithic
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old-time
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out-dated
0
out-moded
0
outworn
0
overage
0
paleoanthropic
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APASmart Define. (2016). prehistoric thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/prehistoric/thesaurus/synonyms
ChicagoSmart Define. 2016. "prehistoric thesaurus" https://smartdefine.org/prehistoric/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, prehistoric thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/prehistoric/thesaurus/synonyms>.
MLASmart Define. "prehistoric thesaurus" 29 February 2016. Web. 25 September 2026. <https://smartdefine.org/prehistoric/thesaurus/synonyms>