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1. Behaviour that breaches the rule or etiquette or custom or morality
   - abnormality
    
2. Not characterized by a fixed principle or rate; at irregular intervals
   - unregularity
    
3. An irregular asymmetry in shape; an irregular spatial pattern
   - geometrical irregularity
    
4. Irregular and infrequent or difficult evacuation of the bowels; can be a symptom of intestinal obstruction or diverticulitis
   - constipation

Derived forms: irregularities

See also: irregular

Type of: asymmetry, dissymmetry, imbalance, misbehavior [US], misbehaviour [Brit, Cdn], misdeed, quality, symptom

Antonym: regularity

Encyclopedia: Irregularity