80 entries under adjective topic. ×

4
pulverulent(light, fine, loose, pulverulence)
4
spectral(heavenly, unsubstantial, incorporeal, nonmaterial)
4
unnoticeable(knowledge, imperceptible)
3
conceptual
3
indistinguishable(knowledge, unclear, subtle, indistinct)
3
metaphysical(physical, abstract, heavenly, theoretical)
3
nebulous(fake, false, unclear, imaginary)
3
phantasmal
3
theoretical(fake, false, abstract, imaginary)
3
unapparent(unsubstantial, intangible)
3
unconcrete
3
weightless
3
wraithlike(heavenly, imperceptible, unseen, ghostly)
2
apparitional(heavenly, unsubstantial, incorporeal, nonmaterial)
2
dim(unclear, insubstantial, indistinct, imperceptible)
2
fleeting
2
gritty
2
indefinite(unclear, insubstantial, indistinct, indistinguishable)
2
inessential
2
obscure(unclear, hidden, indistinct, indistinguishable)
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APASmart Define. (2015). impalpable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/impalpable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impalpable thesaurus" https://smartdefine.org/impalpable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, impalpable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/impalpable/thesaurus/synonyms>.
MLASmart Define. "impalpable thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/impalpable/thesaurus/synonyms>