3
absolute(noun, adjective, rule, certain, essential)
3
assumption(noun, law, support, regulation, action)
3
bare(adjective, pure)
3
chaste(adjective, pure)
3
clear(adjective, simple, pure, straightforward, basic)
3
cohesive(adjective, simple, whole, united)
3
coincident(adjective, simple, whole, united)
3
congruent(adjective, simple, whole, united)
3
congruous(adjective, simple, whole, united)
3
deep-seated(adjective, characteristic, original, fixed, essential)
3
essence(noun, support, action, cause, start)
3
fixed
3
fundamental frequency(noun, expression, idiom)
3
gist
3
grounds
3
guts(noun, part, informal, condition, essence)
3
hereditary(adjective, intrinsicality)
3
inceptive(adjective, head, beginning, opening, original)
3
ingredient(noun, drop, part, material, essential)
3
inherited(adjective, intrinsicality)
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APASmart Define. (2016). fundamental thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/fundamental/thesaurus/synonyms
ChicagoSmart Define. 2016. "fundamental thesaurus" https://smartdefine.org/fundamental/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, fundamental thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/fundamental/thesaurus/synonyms>.
MLASmart Define. "fundamental thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/fundamental/thesaurus/synonyms>