unrepentant

from WordNet (r) 3.0 (2006)

unrepentant
    adj 1: not penitent or remorseful [syn: {impenitent},
           {unrepentant}, {unremorseful}] [ant: {penitent},
           {repentant}]
    2: stubbornly persistent in wrongdoing [syn: {cussed},
       {obdurate}, {obstinate}, {unrepentant}]

from The Collaborative International Dictionary of English v.0.48

Unrepentant \Unrepentant\
   See {repentant}.

from Moby Thesaurus II by Grady Ward, 1.0

23 Moby Thesaurus words for "unrepentant":
      callous, hard, hardened, impenitent, insolent, obdurate,
      recidivist, recidivistic, recidivous, regretless, remorseless,
      unabject, unashamed, uncontrite, unembarrassed, unmelted,
      unregenerate, unregretful, unremorseful, unrepenting, unsoftened,
      unsorry, untouched

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