Synonyms for Delinquent (same or very similar meaning)
WordNet sense 1 (a young offender):
juvenile delinquent
WordNet sense 2 (responsible for or chargeable with a reprehensible act; or marked by guilt):
guilty
WordNet sense 3 (failing in what duty requires):
derelict, neglectful, remiss
WordNet sense 4 (characterized by neglect and undue lack of concern):
negligent
WordNet sense 5 (impervious to correction by punishment):
incorrigible
WordNet sense 6 (past due; not paid at the scheduled time):
overdue
WordNet sense 7 (owed and payable immediately or on demand):
due, owed
From the ODE community, based on WordNet
add/edit