| unsound(adjective, bad, strong, light, weak) |
| decrepit(adjective, strong, light, weak, slight) |
| delicate(adjective, strong, light, weak, slight) |
| illusory(adjective, light, weak, slight, strange) |
| incorporeal(adjective, body, light, abstract, heavenly) |
| infirm(adjective, strong, light, weak, slight) |
| rickety(adjective, weak, slight, weakness, thin) |
| shadowy(adjective, gentle, obscure, substance, marvelous) |
| airy(adjective, light, weak, slight, easy) |
| bodiless(adjective, body, abstract, heavenly, theoretical) |
| impalpable(adjective, abstract, heavenly, theoretical, immaterial) |
| insignificant(adjective, weak, soft, gentle, mild) |
| tenuous(adjective, strong, light, weak, slight) |
| diaphanous(adjective, weak, slight, thin, substance) |
| puny(adjective, strong, light, weak, soft) |
| chimerical(adjective, light, weak, slight, gentle) |
| delusive(adjective, strange, trivial, fantasy, insufficient) |
| disembodied(adjective, body, heavenly, incorporeal, nonmaterial) |
| fanciful(adjective, light, gentle, strange, fantasy) |
| implausible(adjective, thin, extraordinary, strange, unreasonable) |