40 entries under unsubstantial topic. ×

5
disembodied(adjective, heavenly, incorporeal, nonmaterial)
5
illusory(adjective, fake, false, imaginary, fanciful)
5
thin(adjective, light, fine, small, loose)
4
imprecise(adjective, unclear, indistinct, indistinguishable)
4
indistinct(adjective, unclear, subtle, imperceptible, unremarkable)
4
spectral(adjective, heavenly, incorporeal, nonmaterial)
3
nebulous(adjective, fake, false, unclear, imaginary)
3
phantasmal
3
unapparent(adjective, intangible)
3
unconcrete
3
weightless
2
apparitional(adjective, heavenly, incorporeal, nonmaterial)
2
inessential
2
vacant
1
delicate(adjective, intangible)
1
empty
1
insignificance
1
nonexistence
1
null
1
vacuous
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APASmart Define. (2015). impalpable thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/impalpable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impalpable thesaurus" https://smartdefine.org/impalpable/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, impalpable thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/impalpable/thesaurus/synonyms>.
MLASmart Define. "impalpable thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/impalpable/thesaurus/synonyms>