| baseless(adjective, real, fictional) |
| deceased(adjective, obsolete, invalid, redundant, vanished) |
| disappeared(adjective, vanished, inexistent) |
| dreamlike(adjective, fake, false, fantastic, real) |
| existless |
| fictive(fake, false, imaginary, fabulous, fanciful) |
| gossamery(adjective, real, fictional) |
| groundless(adjective, real, fictional) |
| hallucinatory(adjective, fake, false, fantastic, real) |
| hypothetical(adjective, real, fictional) |
| immaterial(adjective, fake, false, real, imaginary) |
| mythic(adjective, mythical) |
| mythological(adjective, mythical) |
| shadowy(adjective, real, fictional, inexistence) |
| supposititious(fake, false, fantastic, unreal, fabulous) |
| tenuous(adjective, real, fictional) |
| truant(adjective, absent) |
| unsubstantial(adjective, fantastic, real, imaginary, unreal) |
| visionary(fake, false, fantastic, unreal, fabulous) |
| abolished(adjective, vanished, inexistent) |