Delinquent
Credit slang for a customer not paying on time. A delinquent account is one that is, or has been, in arrears and will subsequently have a negative impact on your credit rating. This will be displayed in the payment history of your credit report.
Delinquency will continue to have an adverse effect on your credit rating even if the the account is brought up to date, and will remain on your credit report for six years from the date of account closure.