| incredible(adjective, great, excellent, belief, superb) |
| unimaginable(adjective, great, excellent, unusual, belief) |
| inconceivable(adjective, unusual, belief, exceptional, unreasonable) |
| impossible(noun, adjective, extraordinary, unusual, strange) |
| unbelievable(adjective, great, excellent, unusual, belief) |
| improbable(adjective, great, excellent, unusual, superb) |
| extraordinary(adjective, great, excellent, unusual, strange) |
| absurd(adjective, unusual, unreasonable, useless, ridiculous) |
| unlikely(adjective, light, thin, extraordinary, unusual) |
| implausible(adjective, extraordinary, unusual, strange, amazing) |
| preposterous(adjective, unusual, unreasonable, useless, ridiculous) |
| splendid(great, excellent, superb, super, groovy) |
| rare(adjective, extraordinary, unusual, strange, exceptional) |
| exceptional(adjective, light, thin, extraordinary, unusual) |
| fabulous(adjective, great, excellent, superb, super) |
| ridiculous(adjective, absurd, outrageous, unbelievable, implausible) |
| unique(adjective, light, extraordinary, unusual, strange) |
| fantastic(adjective, great, excellent, superb, special) |
| marvelous(great, excellent, superb, super, groovy) |
| appealing(great, excellent, superb, super, groovy) |