1 noun LAW, GOV, MED in relation to norm etcmírialtacht fem3 c m uneamhrialtacht fem3 c m uthere were irregularities in the processbhí mírialtachtaí sa phróiseasany irregularity in your heart rhythmaon neamhrialtacht i rithim an chroífinancial irregularitymírialtacht airgeadais2 noun (especially US) MED constipationiatacht fem3 c m utriomach masc1 c m ucruas masc1 c m ushe suffers from bowel irregularitytá an iatacht sna putóga ag dul di, bíonn sí cruaite ina bolg