Definition of irregularities:
(n) :
(uncountable) The state or condition of being irregular, or the extent to which something is irregular.
(n) :
(countable) An instance of being irregular.
(n) :
(countable) An object or event that is not regular or ordinary.
(n) :
(countable) A violation of rules.
(n) :
(euphemistic) Irregular bowel movement (e.g. diarrhea or constipation).