- failure or neglect to do what duty or law requires
- an overdue debt, tax, etc.
- a fault: misdeed
- behavior, esp. by the young, that is antisocial or in violation of the law
Origin of delinquencyLate Latin delinquentia from Classical Latin delinquens, present participle of delinquere, to leave undone, commit a fault from de-, from + linquere, to leave from Indo-European base an unverified form leikw-, to leave from source Classical Greek leipein, to leave, Old English læn, loan