| insignificant |
| intangible asset(noun, expression, idiom) |
| metaphysical(adjective, light, weak, slight, physical) |
| misty(adjective, excellent, gentle, marvelous, vague) |
| molecular |
| otherworldly(excellent, gentle, marvelous, vague, dreamy) |
| phantasmal(adjective, unsubstantial) |
| psychic(heavenly, incorporeal, nonmaterial) |
| subatomic |
| thin(adjective, light, weak, slight, fine) |
| uncertain(adjective, vague, unknown, general, ambiguous) |
| unclear(adjective, clear, false, vague, deceitful) |
| unembodied(heavenly, spiritual, incorporeal, nonmaterial) |
| unfleshly(abstract, heavenly, theoretical, religious, abstruse) |
| unphysical(abstract, theoretical, religious, sacred, abstruse) |
| unsure(adjective, vague, unknown, general, ambiguous) |
| untouchable(adjective, imperceptible) |
| vacant(adjective, unsubstantial) |
| visionary(excellent, gentle, fake, thin, false) |
| wraithlike(adjective, heavenly, imperceptible, unseen, ghostly) |