| indiscernible(adjective, knowledge, unsubstantial, intangible) |
| insensible(adjective, knowledge, heavenly, subtle, imperceptible) |
| minute(light, fine, thin, small, loose) |
| nonphysical(adjective, abstract, heavenly, theoretical, immaterial) |
| tenuous(adjective, unsubstantial, intangible) |
| unobservable(adjective, knowledge, imperceptible, unsubstantial, intangible) |
| abstract(adjective, insubstantial, theoretical, imperceptible, immaterial) |
| chimerical(adjective, fake, false, imaginary, fanciful) |
| disembodied(adjective, heavenly, unsubstantial, incorporeal, nonmaterial) |
| illusory(adjective, fake, false, imaginary, fanciful) |
| imaginary(adjective, fake, false, hidden, fanciful) |
| small(light, fine, thin, loose, little) |
| supernatural(adjective, abstract, heavenly, theoretical, imperceptible) |
| thin(adjective, light, fine, small, loose) |
| unearthly(adjective, abstract, heavenly, theoretical, immaterial) |
| unworldly(adjective, heavenly, immaterial, ghostly, incorporeal) |
| dusty(light, fine, loose, pulverulence) |
| efflorescent(adjective, pulverulence) |
| evanescent(adjective, littleness) |
| ghostly(adjective, heavenly, indistinguishable, imperceptible, unseen) |