poikkeavuus
säännönvastaisuus
ummetus
epäsäännöllisyys
An instance of being irregular.
(quote-journal)
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.
(ux)
A violation of rules.
Irregular bowel movement (e.g. diarrhea or constipation).
(quote-book)