| unlikely(adjective, slight, extraordinary, strange, superb) |
| incredible(adjective, great, excellent, flat, poor) |
| unbelievable(adjective, great, excellent, flat, poor) |
| implausible(adjective, great, slight, flat, poor) |
| doubtful(adjective, extraordinary, uncertain, fantastic, dubious) |
| questionable(adjective, uncertain, doubtful, dubious, likely) |
| unthinkable(adjective, great, excellent, unusual, superb) |
| dubious(adjective, uncertain, doubtful, likely, unlikely) |
| inconceivable(adjective, great, flat, poor, thin) |
| marvelous(adjective, hard, great, excellent, superb) |
| unconvincing(adjective, great, flat, poor, thin) |
| unimaginable(adjective, great, excellent, superb, super) |
| absurd(adjective, wild, unreasonable, useless, doubtful) |
| far-fetched(adjective, hard, extraordinary, uncertain, fantastic) |
| splendid(great, excellent, superb, super, groovy) |
| extraordinary(great, excellent, strange, superb, super) |
| impossible(adjective, extraordinary, wild, strange, unbelievable) |
| fantastic(adjective, great, excellent, extraordinary, strange) |
| weak(adjective, great, poor, extraordinary, strange) |
| fabulous(great, excellent, superb, super, groovy) |