Delinquency

1.Failure to pay money that is owed, for example borrowed money or taxes
2.Delinquency is failure to pay a debt or tax.
3.When money that is owed is not paid at the right time, or is not paid at all

Sources:

Cambridge Advanced Learner's Dictionary & Thesaurus. Cambridge University Press, Retrieved from: https://dictionary.cambridge.org/dictionary/english/delinquency

Collins English Dictionary. HarperCollins Publishers, Retrieved from: https://www.collinsdictionary.com/dictionary/english/delinquency

Longman Dictionary of Contemporary English | LDOCE. Retrieved from: https://www.ldoceonline.com/dictionary/delinquency