| marvelous(adjective, good, hard, great, excellent) |
| staggering(adjective, great, excellent, extraordinary, superb) |
| impossible(verb, adjective, hard, extraordinary, strange) |
| unlikely(adjective, obscure, extraordinary, strange, superb) |
| unsubstantial(adjective, extraordinary, strange, unreasonable, fantasy) |
| preposterous(adjective, hard, great, obscure, difficult) |
| questionable(adjective, weak, great, flat, poor) |
| remarkable(adjective, great, excellent, extraordinary, superb) |
| terrific(adjective, great, excellent, superb, wonderful) |
| doubtful(adjective, great, extraordinary, unreasonable, fantastic) |
| fanciful(adjective, great, excellent, strange, superb) |
| flimsy(adjective, weak, poor, thin, informal) |
| spectacular(adjective, great, excellent, extraordinary, superb) |
| weak(adjective, great, poor, extraordinary, strange) |
| breathtaking(adjective, great, excellent, extraordinary, superb) |
| absurd(adjective, hard, difficult, strange, marvelous) |
| appealing(great, excellent, superb, super, groovy) |
| dubious(adjective, great, extraordinary, unreasonable, amazing) |
| exceptional(adjective, obscure, extraordinary, remarkable, unknown) |
| far-fetched(adjective, hard, great, extraordinary, strange) |