From Longman Business Dictionary
delinquencyde·lin·quen·cy /dɪˈlɪŋkwənsi/ noun (plural delinquencies) [countableC, uncountableU] American EnglishAmE ACCOUNTING when money that is owed is not paid at the right time, or is not paid at allMortgage delinquency rates fell to 4.52% in the second quarter.