/i reg'yeuh lar"i tee/ , n. , pl. irregularities for 2, 3.
1. the quality or state of being irregular.
2. something irregular.
3. a breach of rules, customs, etiquette, morality, etc.
4. occasional mild constipation.
[ 1275-1325; ME irregularite irregularitas. See IR- 2 , REGULARITY ]