irregularity /ɪˌɹɛ.ɡjʊˈlæ.ɹɪ.ti/ noun5 •An instance of being irregular. •The state or condition of being irregular, or the extent to which something is irregular. •An object or event that is not regular or ordinary. •A violation of rules.An investigation of the irregularities in the company's accounts uncovered a large-scale fraud. •(euphemistic) Irregular bowel movement (e.g. diarrhea or constipation).Consuming copious amounts of vegetables, fruit, milk, and an abundance of water effectively treats irregularity. Establishing regular eating, bowel movement, and exercise habits are helpful too. — 2000 formsirregularities