1
elementary(adjective, important, significant, original, essential)
1
entire(excellent, obscure, extraordinary, superior, fantastic)
1
equivocal(uncertain, vague, hesitant, dubious, unsure)
1
esoteric(adjective, abstract, abstruse, philosophical)
1
essential(adjective, important, significant, original, basic)
1
eternal(excellent, obscure, extraordinary, superior, fantastic)
1
exceeding(excellent, obscure, extraordinary, superior, fantastic)
1
extravagant(adjective, intellectual, abstract, unreal, unattainable)
1
fabulous(fake, false, fantastic, imaginary, unreal)
1
faithless(uncertain, hesitant, dubious, unsure)
1
faltering(uncertain, hesitant, dubious, unsure)
1
figmental(fake, false, fantastic, imaginary, unreal)
1
finished(excellent, obscure, extraordinary, superior, fantastic)
1
first(adjective, important, significant, original, essential)
1
flustered(uncertain, hesitant, dubious, unsure)
1
formalistic(adjective, hypothetical)
1
formularized(adjective, hypothetical)
1
foundational(adjective, important, significant, original, essential)
1
grass-roots(adjective, important, significant, original, essential)
1
hallucinatory(fake, false, fantastic, imaginary, unreal)
11 years ago|15k views|share |citing 
APASmart Define. (2015). theoretical thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/theoretical/thesaurus/synonyms
ChicagoSmart Define. 2015. "theoretical thesaurus" https://smartdefine.org/theoretical/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, theoretical thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/theoretical/thesaurus/synonyms>.
MLASmart Define. "theoretical thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/theoretical/thesaurus/synonyms>