| beyond belief(expression, adjective, idiom, belief, absurd) |
| fabulous(adjective, wonderful, amazing) |
| flimsy(adjective, light, unreasonable, rare, likely) |
| marvelous(adjective, hard, unusual, strange, superb) |
| mind-boggling(adjective, extraordinary, belief, amazing, astonishing) |
| ridiculous(adjective, absurd, unbelievable, implausible, preposterous) |
| weak(adjective, great, poor, informal, extraordinary) |
| amazing(adjective, great, extraordinary, unusual, strange) |
| dubious(adjective, extraordinary, unreasonable, amazing, doubtful) |
| impracticable(adjective, unreasonable, useless, doubtful, absurd) |
| outlandish(obscure, extraordinary, absurd, unknown, implausible) |
| prodigious(adjective, superb, wonderful, marvelous, fantastic) |
| questionable(adjective, extraordinary, amazing, doubtful, dubious) |
| unfathomable(adjective, size, unbelievable, impossible, unimaginable) |
| unsubstantial(adjective, thin, extraordinary, belief, unreasonable) |
| obscure(adjective, unreasonable, dubious, unknown, flimsy) |
| out of the question(expression, adjective, idiom, unreasonable, useless) |
| phenomenal(adjective, unusual, strange, superb, wonderful) |
| remote(adjective, doubtful, dubious, improbable, impossible) |
| stupendous(adjective, unusual, strange, superb, wonderful) |