Definition of irregularity noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ɪˌreɡjəˈlærəti//
    ; NAmE NAmE//ɪˌreɡjəˈlærəti//
    (pl. irregularities)
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  1. 1[countable, uncountable] an activity or a practice which is not according to the usual rules, or not normal alleged irregularities in the election campaign suspicion of financial irregularity
  2. 2[countable, uncountable] something that does not happen at regular intervals a slight irregularity in his heartbeat
  3. 3[uncountable, countable] something that is not smooth or regular in shape or arrangement The paint will cover any irregularity in the surface of the walls.
  4. compare regularity
    Word OriginMiddle English: from Old French irregularite, from late Latin irregularitas, from irregularis, from in- ‘not’ + regularis (from regula ‘rule’).Extra examples Investigators found no evidence of financial irregularity. Irregularities occur when there is no central control. The newspaper claimed there were widespread irregularities in the election. a slight irregularity in the surface of the wood
See the Oxford Advanced American Dictionary entry: irregularity