| unworkable(adjective, wild, silly, unreasonable, useless) |
| weird |
| abstract(wild, unreasonable, useless, absurd, unrealistic) |
| allegorical(mythical, fabled, mythological) |
| apocryphal(mythical, fabled, mythological) |
| arguable(uncertain, doubtful, unsure) |
| belief(extraordinary, strange, unbelievable, implausible, unthinkable) |
| beyond belief(expression, adjective, extraordinary, amazing, unbelievable) |
| beyond reason(expression, extraordinary, strange, unbelievable, implausible) |
| calculable |
| chancy(uncertain, doubtful, shaky, unsure, unlikely) |
| chimerical(wild, unreasonable, useless, absurd, abstract) |
| cockamamie(extraordinary, amazing, incredible) |
| cockeyed(extraordinary, amazing, incredible) |
| created(mythical, fabled, mythological) |
| customary(mythical, fabled, mythological) |
| deficient(adjective, flat, poor, thin, small) |
| diffident(uncertain, doubtful, unsure) |
| disputable(uncertain, doubtful, unsure) |
| dissimilar |