| aberrant(adjective, unusual, usual, irregular, normal) |
| irregular(adjective, unusual, abnormal, uncharacteristic, deviant) |
| unique |
| atypical(adjective, unusual, irregular, weird, abnormal) |
| deviant(adjective, unusual, irregular, weird, abnormal) |
| odd(adjective, unusual, irregular, weird, abnormal) |
| unusual(adjective, irregular, weird, abnormal, uncharacteristic) |
| abnormal(adjective, unusual, irregular, weird, uncharacteristic) |
| anomalous(adjective, unusual, irregular, abnormal, uncharacteristic) |
| capricious |
| colloquial |
| defective |
| deviating(irregular, uncharacteristic) |
| different(adjective, unusual, abnormal) |
| divergent(irregular, uncharacteristic) |
| malformed(adjective, irregular, uncharacteristic) |
| strange(adjective, unusual, irregular, weird, abnormal) |
| uncharacteristic(adjective, unusual, irregular, abnormal, deviant) |
| unexpected(adjective, irregular, uncharacteristic) |
| unorthodox(irregular, uncharacteristic) |