irregularity
noun
1.
behavior that breaches the rule or etiquette or custom or morality
Derived from:
irregular 2.
not characterized by a fixed principle or rate; at irregular intervals
Antonym:
regularity Derived from:
irregular 3.
an irregular asymmetry in shape; an irregular spatial pattern
Derived from:
irregular 4.
irregular and infrequent or difficult evacuation of the bowels; can be a symptom of intestinal obstruction or diverticulitis
Derived from:
irregular