| open to doubt(expression, idiom, extraordinary, amazing, dubious) |
| outlandish(extraordinary, amazing, incredible) |
| past belief(expression, extraordinary, amazing, dubious, astonishing) |
| phony(extraordinary, amazing, incredible) |
| questionable(extraordinary, amazing, unlikely, unbelievable, incredible) |
| reaching(extraordinary, amazing, dubious, astonishing, incredible) |
| scatterbrained(extraordinary, amazing, dubious, astonishing, incredible) |
| schlocky |
| screwy(extraordinary, amazing, dubious, astonishing, incredible) |
| staggering(extraordinary, amazing, incredible) |
| suspect(extraordinary, unreasonable, amazing, dubious, unlikely) |
| thick(extraordinary, amazing, dubious, astonishing, incredible) |
| thin(weak, extraordinary, unreasonable, inadequate, cheap) |
| too much(expression, extraordinary, unreasonable, dubious, astonishing) |
| unbelievable(adjective, extraordinary, unreasonable, amazing, dubious) |
| unconvincing(extraordinary, unreasonable, amazing, dubious, unlikely) |
| unimaginable(extraordinary, amazing, incredible) |
| unsubstantial(extraordinary, unreasonable, amazing, dubious, unlikely) |
| unthinkable(extraordinary, amazing, incredible) |
| weak(extraordinary, unreasonable, inadequate, cheap, dubious) |