Another word for delinquent
Lax in duty
derelict, remiss, negligent, slack, behind hand, tardy, procrastinating, criminal, neglectful, faulty, shabby, guilty of misdeed, failing in duty, blameworthy, blamable, culpable, red-handed, censurable, offending, reprehensible; see also careless 1.
Not paid on time; said especially of taxes
defaulter, tax evader, offender, reprobate, dawdler, slacker, bad debtor, poor risk, neglecter of duty, felon, miscreant, malefactor, lawbreaker, wrongdoer, sinner, juvenile offender, juvenile delinquent, JD*, punk*, hoodlum, hood*, ganster, hooligan*, troublemaker, outlaw, scamp, black sheep, fallen angel, jailbird*, welsher*, tax dodger*, deadbeat*; see also criminal.