4
granular(light, fine, thin, small, loose)
4
imprecise(adjective, unclear, indistinct, indistinguishable, unsubstantial)
4
indistinct(adjective, unclear, subtle, imperceptible, unremarkable)
4
phantom
4
pulverulent(adjective, light, fine, loose, pulverulence)
4
spectral(adjective, heavenly, unsubstantial, incorporeal, nonmaterial)
4
unnoticeable(adjective, knowledge, imperceptible)
3
atomic
3
branny
3
conceptual(adjective, immaterial)
3
corpuscular
3
embryonic
3
farinaceous
3
floury
3
indistinguishable(adjective, knowledge, unclear, subtle, indistinct)
3
infinitesimal
3
metaphysical(adjective, physical, abstract, heavenly, theoretical)
3
molecular
3
nebulous(adjective, fake, false, unclear, imaginary)
3
phantasmal(adjective, unsubstantial)
11 years ago|10k views|share |citing 
APASmart Define. (2015). impalpable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/impalpable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impalpable thesaurus" https://smartdefine.org/impalpable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, impalpable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/impalpable/thesaurus/synonyms>.
MLASmart Define. "impalpable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/impalpable/thesaurus/synonyms>