| unearthly(abstract, heavenly, theoretical, abstruse, philosophical) |
| unembodied(adjective, heavenly, airy, insensible, immaterial) |
| unphysical(abstract, theoretical, religious, sacred, abstruse) |
| unsubstantial(abstract, heavenly, theoretical, abstruse, philosophical) |
| unworldly(heavenly, incorporeal, nonmaterial) |
| abstract(theoretical, abstruse, philosophical) |
| abstruse(abstract, theoretical, philosophical) |
| aerial(heavenly, incorporeal, nonmaterial) |
| apparitional(adjective, heavenly, airy, insensible, immaterial) |
| asomatous(adjective, heavenly, airy, insensible, religious) |
| astral |
| celestial(heavenly, incorporeal, nonmaterial) |
| deep(abstract, theoretical, abstruse, philosophical) |
| difficult(abstract, theoretical, abstruse, philosophical) |
| disbodied(adjective, heavenly, airy, insensible, immaterial) |
| dreamlike(heavenly, incorporeal, nonmaterial) |
| dreamy(heavenly, incorporeal, nonmaterial) |
| esoteric(abstract, theoretical, abstruse, philosophical) |
| eternal(abstract, theoretical, abstruse, philosophical) |
| fundamental(abstract, theoretical, abstruse, philosophical) |