Merriam-Webster's Collegiate® Dictionary, 11th Edition
DELINQUENT
I. noun
Date: 15th century
a delinquent person,
II. adjective see: loan
Date: 1603
offending by neglect or violation of duty or of law, being overdue in payment , of, relating to, or characteristic of delinquents ; marked by delinquency , delinquently adverb