A violation of rules.
An object or event that is not regular or ordinary.
An instance of being irregular.
Irregular bowel movement (e.g. diarrhea or constipation).
The state or condition of being irregular, or the extent to which something is irregular.
A specific good or service (e.g. a drink) that someone typically orders.
The typical state of something, or something that is typical.
Most commonly occurring; typical.