41 entries under abstruse topic. ×

21
abstract(adjective, obscure, extraordinary, superior, wild)
15
ideal(adjective, fake, extraordinary, superior, false)
9
intellectual(adjective, obscure, extraordinary, fantastic, whole)
8
philosophical(adjective, moral, intellectual, supernatural, abstract)
7
unreal(adjective, fake, wild, unreasonable, fantastic)
5
transcendental(adjective, real, intellectual, supernatural, abstract)
4
unearthly(adjective, intellectual, supernatural, abstract, spiritual)
3
bodiless(adjective, abstract, immaterial, philosophical)
3
immaterial(adjective, fake, false, intellectual, abstract)
3
impalpable(adjective, fake, false, abstract, imaginary)
3
incorporeal(adjective, abstract, immaterial, philosophical)
3
intangible(adjective, fake, false, intellectual, abstract)
3
spiritual(adjective, abstract, immaterial, philosophical)
3
unsubstantial(adjective, fantastic, abstract, imaginary, unreal)
2
discarnate(abstract, philosophical)
2
fundamental(adjective, important, original, essential, basic)
2
supernatural(adjective, excellent, obscure, extraordinary, superior)
1
deep(original, moral, basic, intellectual, abstract)
1
difficult(abstract, philosophical)
1
esoteric(adjective, abstract, philosophical)
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APASmart Define. (2015). theoretical thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/theoretical/thesaurus/synonyms
ChicagoSmart Define. 2015. "theoretical thesaurus" https://smartdefine.org/theoretical/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, theoretical thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/theoretical/thesaurus/synonyms>.
MLASmart Define. "theoretical thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/theoretical/thesaurus/synonyms>