delinquent

Etymology

Borrowed from Middle French délinquant, ultimately from Latin delinquens, present participle of delinquo.

adj

1. Late or failing to pay a debt or other financial obligation, like a mortgage or loan.
   Fred is delinquent in making his car payment.
   The company made a new effort to collect delinquent payments.
2. Failing in or neglectful of a duty or obligation; guilty of a misdeed or offense

noun

1. One who disobeys or breaks rules or laws, or who acts against another's wishes.
2. A person who has not paid their debts.
3. (historical, derogatory) A royalist in the First English Civil War (1642-1646).