0
fiercely
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formerly
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fundamentally
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in an early form
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in the earliest stages
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initially
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originally
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primarily
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primevally
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primordially
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pristinely
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radically
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rustily
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savagely
<12>
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APASmart Define. (2015). prehistorically thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/prehistorically/thesaurus/synonyms
ChicagoSmart Define. 2015. "prehistorically thesaurus" https://smartdefine.org/prehistorically/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, prehistorically thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/prehistorically/thesaurus/synonyms>.
MLASmart Define. "prehistorically thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/prehistorically/thesaurus/synonyms>