| intangible(adjective, knowledge, little, abstract, heavenly) |
| imperceptible(adjective, hard, knowledge, fine, faint) |
| unsubstantial(adjective, little, abstract, heavenly, theoretical) |
| immaterial(adjective, form, false, abstract, heavenly) |
| ethereal(adjective, light, delicate, heavenly, imperceptible) |
| imponderable(adjective, knowledge, heavenly, subtle, imperceptible) |
| incorporeal(adjective, abstract, heavenly, insubstantial, theoretical) |
| powdery(adjective, light, fine, thin, small) |
| fine(adjective, light, delicate, little, imperceptible) |
| insubstantial(adjective, fake, false, abstract, fanciful) |
| unperceivable(adjective, unsubstantial, intangible) |
| inappreciable(adjective, knowledge, imperceptible, littleness, unsubstantial) |
| airy(adjective, heavenly, insubstantial, imperceptible, unsubstantial) |
| elusive |
| invisible(adjective, knowledge, hidden, unable, littleness) |
| shadowy(adjective, heavenly, unclear, subtle, imperceptible) |
| spiritual(adjective, abstract, heavenly, theoretical, immaterial) |
| unreal(adjective, fake, abstract, theoretical, imperceptible) |
| vague(adjective, clear, definite, unclear, subtle) |
| bodiless(adjective, abstract, heavenly, theoretical, immaterial) |