A point of resemblance; a similarity.
The state of being conforming, of complying with a set of rules, with a norm or standard.
The state of things being similar or identical.
The ideology of adhering to one standard or social uniformity.
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.