<p><strong>Noun:</strong></p><ul><li>Failure in or neglect of duty or obligation; dereliction; default: delinquency in payment of dues.</li><li>Wrongful, illegal, or antisocial behavior.</li><li>Any misdeed, offense, or misdemeanor.</li><li>Something, as a debt, that is past due or otherwise delinquent.</li></ul>