45 entries under theoretical topic. ×

20
recondite(adjective, sound, easy, evil, sharp)
17
abstruse(noun, adjective, hard, sound, easy)
16
deep(adjective, hard, sound, easy, evil)
12
mystical(adjective, hard, evil, obscure, dark)
6
spiritual(adjective, private, abstract, mental)
3
abstract(adjective, hard, delicate, complex)
3
metaphysical(adjective, physical, supernatural, abstract, spiritual)
3
numinous(supernatural, abstract, spiritual, abstruse)
3
philosophical(adjective, sound, deep, thoughtful, abstract)
3
preternatural(adjective, obscure, deep, mysterious, abstract)
3
supernatural(adjective, abstract, spiritual, abstruse)
2
superhuman(abstract, abstruse, philosophical)
2
supramundane(abstract, abstruse, philosophical)
2
supranatural(abstract, abstruse, philosophical)
2
transcendental(strange, supernatural, abstract, spiritual)
2
unearthly(obscure, deep, mysterious, abstract)
1
bodiless(abstract, abstruse, philosophical)
1
discarnate(abstract, abstruse, philosophical)
1
eternal(deep, abstract, abstruse, profound)
1
fundamental(abstract, abstruse, philosophical)
<123>
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APASmart Define. (2015). esoteric thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/esoteric/thesaurus/synonyms
ChicagoSmart Define. 2015. "esoteric thesaurus" https://smartdefine.org/esoteric/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, esoteric thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/esoteric/thesaurus/synonyms>.
MLASmart Define. "esoteric thesaurus" 30 July 2015. Web. 23 September 2026. <https://smartdefine.org/esoteric/thesaurus/synonyms>