| incongruous(adjective, irrelevant, foreign, inapposite) |
| inconsonant(adjective, irrelevant, foreign, inapposite) |
| inconstant(adjective, changeable, fickle, erratic) |
| indecisive(adjective, changeable, fickle, erratic) |
| infrequent(adjective, exceptional, irregular, anomalous) |
| irregular(adjective, changeable, fickle, erratic) |
| irrelative(adjective, irrelevant, foreign, inapposite) |
| irresolute(adjective, changeable, fickle, erratic) |
| irresponsible(adjective, changeable, fickle, erratic) |
| kaleidoscopic(adjective, changeable, fickle, erratic) |
| mercurial(adjective, changeable, fickle, erratic) |
| mobile(adjective, changeable, fickle, erratic) |
| movable(adjective, changeable, fickle, erratic) |
| notable(adjective, exceptional, irregular, anomalous) |
| noteworthy(adjective, exceptional, irregular, anomalous) |
| odd(adjective, exceptional, irregular, anomalous) |
| peculiar(adjective, exceptional, irregular, anomalous) |
| permutable(adjective, changeable, fickle, erratic) |
| phenomenal(adjective, exceptional, irregular, anomalous) |
| rare(adjective, exceptional, irregular, anomalous) |