| problematic(adjective, assumed, guessed) |
| transcendental(adjective, great, superior, real, intellectual) |
| apocryphal |
| conjectured(adjective, expected, supposed, presumed) |
| disputable(verb, adjective, supposed, assumed, guessed) |
| experimental(adjective, uncertainty) |
| fantastic(adjective, excellent, obscure, extraordinary, superior) |
| fictitious(adjective, fantastic, intellectual, abstract, unreal) |
| groundless |
| hypothesized(adjective, expected, supposed, presumed) |
| indeterminate(verb, adjective, supposed, assumed, guessed) |
| inferential(adjective, belief) |
| intangible(adjective, intellectual, abstract, indefinite, insubstantial) |
| made-up(fantastic, unreal, theoretical, fictitious, invented) |
| surmised(adjective, uncertain, doubtful, expected, supposed) |
| suspected |
| synthetic |
| unpractical(adjective, theoretical) |
| vague(verb, adjective, supposed, assumed, guessed) |
| abstruse(intellectual, abstract, insubstantial, theoretical, imperceptible) |