The DICT Development Group

  nonindulgent \nonindulgent\ adj.
     1. not indulgent. [Narrower terms: austere, forbidding,
        stern ; blue(prenominal), puritan, puritanical ;
        corrective, disciplinary, disciplinal ; {monkish ;
        renunciant, renunciative, self-abnegating, self-denying
        ; self-disciplined ; {spartan, strict ] Also See
        abstemious. Antonym: indulgent.
        [WordNet 1.5]
  
     2. unpermissive. Opposite of permissive.
        [WordNet 1.5]

  nonindulgent
      adj 1: characterized by strictness, severity, or restraint [syn:
             nonindulgent, strict] [ant: indulgent]