irregularity

(noun) behavior that breaches the rule or etiquette or custom or morality. Synonyms: abnormality.

(noun) not characterized by a fixed principle or rate; at irregular intervals. Synonyms: unregularity.

(noun) an irregular asymmetry in shape; an irregular spatial pattern. Synonyms: geometrical irregularity.

(noun) irregular and infrequent or difficult evacuation of the bowels; can be a symptom of intestinal obstruction or diverticulitis. Synonyms: constipation.