n. 25B6; adjective
delinquent teenagers : LAWLESS, lawbreaking, criminal; errant, badly behaved, troublesome, difficult, unruly, disobedient, uncontrollable.
(formal) delinquent parents face tough penalties : NEGLIGENT, neglectful, remiss, irresponsible, lax, slack; N. Amer. derelict.
dutiful.
25B6; noun teenage delinquents : OFFENDER, wrongdoer, malefactor, lawbreaker, culprit, criminal; hooligan, vandal, ruffian, hoodlum; young offender; informal tearaway.