Definition of "irregularity"
noun
countable and uncountable, plural irregularities
(euphemistic) Irregular bowel movement (e.g. diarrhea or constipation).
Quotations
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, James Dallas Jardine, Indu Vaid, Alternative Therapies, Health Harmony, page 246