134 entries under basic topic. ×

3
natural(adjective, simple, material, living)
3
requisite(adjective, important, significant, original, essential)
2
clear(adjective, simple, pure, straightforward)
2
connate(adjective, cause, absolute, fundamental)
2
integral(adjective, body, material, important, significant)
2
prefatory(simple, straightforward, first, previous)
2
preliminary(adjective, simple, straightforward, first)
2
previous(first, initial)
2
substratal(adjective, simple, plain, important, significant)
2
uncomplicated(adjective, simple, straightforward, unsophisticated)
1
ABCs(simple, straightforward, uncomplicated)
1
absolute(adjective, essential, prime, fundamental)
1
amoebic(material, natural, living, functional)
1
anatomical(material, natural, living, functional)
1
animate(material, natural, living, functional)
1
axiological(adjective, important, significant, original, essential)
1
axiomatic(important, original, vital)
1
biological(material, natural, living, functional)
1
biotic(material, natural, living, functional)
1
bottom-line(adjective, important, significant, original, essential)
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APASmart Define. (2016). primary thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/primary/thesaurus/synonyms
ChicagoSmart Define. 2016. "primary thesaurus" https://smartdefine.org/primary/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, primary thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/primary/thesaurus/synonyms>.
MLASmart Define. "primary thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/primary/thesaurus/synonyms>