| chimerical(adjective, excellent, gentle, happy, tender) |
| extravagant(adjective, happy, tender, perfect, fantastic) |
| inadequate(adjective, useless, unfit, hopeless, unusable) |
| inoperable(adjective, unreasonable, hopeless, unrealistic, unworkable) |
| optimistic(adjective, person, good feelings) |
| ridiculous(adjective, silly, foolish, stupid, half-baked) |
| unsuitable(adjective, useless, unfit) |
| Laputan |
| academic |
| frivolous(adjective, silly, foolish, stupid, trivial) |
| half-baked(adjective, silly, stupid, impulsive, unlikely) |
| hypothetical |
| illogical(adjective, unreasonable, unrealistic, unpractical, unviable) |
| improbable(adjective, silly, unreasonable, unlikely, unrealistic) |
| inapplicable(adjective, unreasonable, useless, unfit, unrealistic) |
| inappropriate(adjective, useless, unfit, half-baked, doomed) |
| incompetent(adjective, weak, stupid, idle, useless) |
| intangible(excellent, gentle, marvelous, vague, dreamy) |
| ivory-tower(adjective, silly, unreasonable, thrive, unlikely) |
| nonrealistic(silly, unlikely, unreal, idealistic, improbable) |