48 entries under abstract topic. ×

1
unfleshly(theoretical, philosophical)
1
universal(theoretical, philosophical)
1
unphysical(theoretical, philosophical)
1
unreal(intellectual, insubstantial, theoretical, imperceptible)
1
unsubstantial(insubstantial, theoretical, imperceptible, philosophical)
0
conjectural(theoretical, philosophical)
0
ontological(theoretical, philosophical)
0
speculative(theoretical, philosophical)
<123>
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APASmart Define. (2015). abstruse thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/abstruse/thesaurus/synonyms
ChicagoSmart Define. 2015. "abstruse thesaurus" https://smartdefine.org/abstruse/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, abstruse thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/abstruse/thesaurus/synonyms>.
MLASmart Define. "abstruse thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/abstruse/thesaurus/synonyms>