irregularity

Universal Words noun (plural irregularities) 1 [C,U] 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 [C,U] something that does not happen at regular intervals: a slight irregularity in his heartbeat 3 [U,C] something that is not smooth or regular in shape or arrangement: The paint will cover any irregularity in the surface of the walls. compareREGULARITY