1. (noun) deviation from the normal or common order or form or rule

• anomaly

1. (noun) deviation from the normal or common order or form or rule

• abnormalcy
• abnormality

1. (noun) deviation from the normal or common order or form or rule

• birth defect
• congenital abnormality
• congenital anomaly
• congenital defect
• congenital disorder

1. (noun) deviation from the normal or common order or form or rule

• anomalist
• anomalous
• anomalous